Vibration measuring transducer and electronic vibration measuring system formed by the same

Abstract

The measuring transducer according to the invention comprises: a pipe assembly having a curved pipe (111), a pipe (121) having the same structure as the curved pipe (112), a pipe (122) having the same structure as the curved pipe (112), and a pipe (122) having the same structure as the pipe (112), and two flow dividers (21, 22), each flow divider having four flow openings. In addition, the measuring transducer comprises an exciter assembly for inducing and maintaining mechanical vibration of the pipe assembly and a sensor assembly for sensing the mechanical vibration of the pipe assembly and for generating vibration measurement signals, each of which represents the vibration movement of one or more pipes. Each tube is connected to each flow divider, thereby forming four parallel flow paths, and each tube has in each case: at least one straight partial section (111-1, 121-1, 112-1 or 122-1) which is connected to the flow divider (21); an arcuate partial section (111-2, 121-2, 112-2, 122-2) which adjoins the straight partial section respectively; a straight partial section (111-3, 121-3, 112-3, 122-3) which adjoins the arcuate partial section respectively; an arcuate partial section (1 11‑4, 121‑4, 112‑4, 122‑4), which are respectively adjacent to the straight partial sections; straight partial sections (111‑5, 121‑5, 112‑5, 122‑5), which are adjacent to the arcuate partial sections; arcuate partial sections (111‑6, 121‑6, 112‑6, 122‑6), which are respectively adjacent to the straight partial sections; and arcuate partial sections (111‑7, 121‑7, 112‑7, 122‑7), which are respectively adjacent to the straight partial sections and connected to the diverter (22). In the measuring transducer according to the invention, each partial segment (111-2, 121-2, 112-2, 122-2; 111-6, 121-6, 112-6, 122-6) has in each case a segment length corresponding to the extension length of the virtual circular arc center line of the partial segment, an arc radius corresponding to the radius of the virtual circular arc center line, and a center point angle corresponding to the ratio of the segment length to the arc radius, so that the partial segments (111-2, 121-2, 112-2, 122-2) have the same shape and the same size, and the partial segments (111-6, 121-6, 112-6, 122-6) have the same shape and the same size.

Description

Technical Field

[0001] The invention relates to a measuring transducer, which is particularly suitable for an electronic vibration measuring system for measuring at least one measured variable of a flowing fluid, whose pipe assembly is formed by means of four identical elbows in pairs and two flow dividers each having four flow openings, and to an electronic vibration measuring system formed by means of such a measuring transducer for measuring at least one measured variable, i.e., for example, a flow parameter (such as mass flow or volume flow) or a material parameter (such as density or viscosity) of the flowing fluid. The invention also relates to an electronic vibration measuring system formed by such a measuring transducer. Background Art

[0002] In industrial measurement technology, in particular also in connection with the regulation and monitoring of automated process engineering processes, vibratory electronic measuring systems are formed by means of a transformer circuit, which is primarily formed by means of at least one microprocessor, and a vibratory measuring transducer, respectively, which is electrically connected to the transformer circuit and through which the medium to be measured flows during operation, i.e., for example, Coriolis mass flow meters are often used to determine the mass flow of a medium (e.g., a liquid, a gas or a dispersion) flowing in a process line (e.g., a pipeline) with high accuracy. Vibratory measuring transducers or vibratory electronic measuring systems formed therefrom are described, for example, in US-A 2012 / 0192658, US-A 2017 / 0261474, US-A 2017 / 0356777 or in our own unpublished international patent application PCT / EP2018 / 081298. Thus, a tube assembly of such a measuring transducer has a curved first tube, a second tube identical in structure to the first tube, a curved third tube and a fourth tube identical in structure only to the third tube. Furthermore, the aforementioned tube assembly has: a first flow splitter, which, for example, serves as a pipeline branching unit during operation, and has four (here precisely four) flow openings; and a second flow splitter, which, for example, is identical in structure to the first flow splitter and, for example, serves as a pipeline merging unit during operation, and has four (here precisely four) flow openings. Each of the aforementioned (here precisely) four tubes extends from a respective first end to a respective second end, with a respective tube length corresponding to the extension length or length of its respective center line, and each has an inner cavity surrounded by a tube wall (usually a metal tube wall) and extends from a respective first end of the respective tube to a respective second end of the tube, wherein the tube wall is usually integral, i.e. the tube formed therefrom is usually formed as one piece. Furthermore, the four tubes belonging to one of the aforementioned tube assemblies all have the same caliber (inner diameter), and for the purpose of forming four parallel flow paths, each tube is connected to each of the two flow dividers, so that the first tube opens with its first end to the first flow opening of the first flow divider and with its second end to the first flow opening of the second flow divider, the second tube opens with its first end to the second flow opening of the first flow divider and with its second end to the second flow opening of the second flow divider, the third tube opens with its first end to the third flow opening of the first flow divider and with its second end to the third flow opening of the second flow divider, and the fourth tube opens with its first end to the fourth flow opening of the first flow divider and with its second end to the fourth flow opening of the second flow divider. The tubes of the tube assembly are respectively formed, for example, by bending, so that each of the first tube, the second tube, the third tube and the fourth tube finally has a tube shape lying in a (bending) plane, and the tube wall of each tube is usually composed of the same material, such as stainless steel or a nickel-based alloy.

[0003] Furthermore, each tube has a first imaginary plane of symmetry and a second imaginary plane of symmetry perpendicular thereto, respectively, and each tube is shaped so that it is mirror-symmetrical with respect to the associated first plane of symmetry and the associated second plane of symmetry, respectively, for example so that each of the aforementioned tubes ends up being at least partially substantially V-shaped or having at least a partial area with a substantially V-shaped profile. Furthermore, as is common in tube assemblies of the aforementioned type, the tubes and flow dividers are designed and arranged so that the respective tube assembly ends up having a first imaginary plane of symmetry, which is located between the first tube and the second tube and between the third tube and the fourth tube, and the tube assembly is mirror-symmetrical about this first imaginary plane of symmetry, and the tube assembly has a second imaginary plane of symmetry, which is perpendicular to the first imaginary plane of symmetry but still intersects each tube imaginarily, and the tube assembly is also mirror-symmetrical about this second imaginary plane of symmetry. Furthermore, the tubes are arranged such that the minimum distance of the first tube from the first imaginary plane of symmetry is equal to the minimum distance of the third tube from the first imaginary plane of symmetry, and the minimum distance of the third tube from the first imaginary plane of symmetry is equal to the minimum distance of the fourth tube from the first imaginary plane of symmetry; this also in particular causes the first tube and the second tube to be parallel to each other or to the first imaginary plane of symmetry, and the third tube and the fourth tube to be parallel to each other or to the first imaginary plane of symmetry, for example also causes the first tube and the third tube to be located in a common first tube plane and the second tube and the fourth tube to be located in a common second tube plane.

[0004] Typically, the measuring transducer discussed disclosed in US-A 2012 / 0192658, US-A 2017 / 0261474, US-A2017 / 0356777 or international patent application PCT / EP2018 / 081298, respectively, also has a transducer housing, which surrounds its corresponding tube and has an almost sealed and closed cavity, in which each tube is arranged. Each transducer housing is formed by means of a cylindrical support element (i.e., in particular a tubular support element or a support element that is at least partially hollow cylindrical), and is formed by means of a housing element such as a cap. The support element extends from a first end to a second end with a support element length, and is mechanically connected (in particular combined) to a first shunt at its first end, and is mechanically connected (in particular combined) to a second shunt at its second end. The housing element is then mechanically connected (in particular combined) to the support element. Both the support element and the housing element have a hollow space, respectively, which is surrounded by a wall, usually of metal, and respectively forms a partial area of ​​the cavity, so that the wall of the housing element together with a section of the wall of the support element surrounds the hollow space forming a partial area of ​​the cavity, and the hollow spaces are connected to each other or transition to each other. To this end, a first opening and at least one second opening spaced apart from the first opening along an imaginary envelope of the wall are respectively arranged in the wall of the support element, so that each of the first opening and the second opening respectively forms a partial area of ​​the cavity of the transducer housing, and each tube extends through both the first opening and the second opening, respectively. In addition, in the aforementioned measuring transducer, the tube assembly and the transducer housing are respectively designed and positioned so that each tube is only partially arranged in the hollow space of the support element, that is, only partially arranged in the hollow space of the housing element.

[0005] The tube assembly or the measuring transducer formed therefrom is particularly arranged or configured to be integrated into the route of a process pipeline designed as a pipeline, which conducts a fluid to be measured (i.e., for example a gas, a liquid or a dispersion) and is flowed through by said fluid during operation. To this end, the measuring transducer can, for example, be integrated into the process pipeline such that a first flow splitter of the tube assembly is arranged on the inlet side (i.e., serves as a pipeline branching unit) and a second flow splitter of the tube assembly is arranged on the outlet side (i.e., serves as a pipeline merging unit), and the fluid flows through each tube of the tube assembly in a common flow direction, i.e., starting from its respective first end in the direction of its respective second end. Furthermore, each of the aforementioned tubes is respectively configured to conduct an optionally flowing fluid in its respective inner cavity and, in particular in order to induce a measurement effect related to at least one measured variable, to allow vibrations, in particular to cause each tube to undergo useful vibrations (i.e., mechanical vibrations) about a respective rest position, the useful frequency of which can also be partly defined by the density of the medium, i.e., can be used as a measure of the density. In conventional measuring systems designed as Coriolis mass flowmeters, bending vibrations at natural resonant frequencies are usually used as useful vibrations, for example bending vibrations corresponding to natural fundamental bending vibration modes inherent to the measuring transducer, and wherein the vibrations of each measuring tube are respectively resonant vibrations with exactly one vibration loop. Furthermore, in the case of at least partially curved tubes, the useful vibrations are usually formed such that the tube oscillates in a cantilevered manner clamped at one end about a relevant imaginary vibration axis imaginarily connecting the inlet-side end and the outlet-side end of the tube. In order to avoid that the vibrating tubes, which are harmful to the measurement, come into contact with each other or with the transducer housing, each tube has only a distance from the respective other tube and from the transducer housing, in particular a distance from the respective edge of each of the two openings provided in the wall of the support element, which respectively achieves free vibrations with sufficient vibration amplitude for measurement under all operating conditions.

[0006] In order to induce and maintain forced mechanical vibrations of the tube assembly (i.e., in particular also the aforementioned useful vibrations), the measuring transducer has a corresponding exciter assembly, which is formed by means of two structurally identical electrodynamic vibration exciters. Each vibration exciter is electrically connected to the aforementioned transformer circuit by means of a pair of electrical connecting lines (e.g., in the form of connecting wires and / or in the form of printed conductors of a flexible printed circuit board), respectively, and acts when actuated by a corresponding electrical driver signal generated and correspondingly adjusted by a drive electronics unit arranged in the transformer circuit (i.e., at least in each case suitable for changing the vibration characteristics of the respective tube (in particular, converting the electrical excitation power fed by means of the drive signal into a drive force acting on the respective tube). The drive electronics unit is also particularly configured to adjust each driver signal by means of an internal control so that it respectively has a signal frequency corresponding to the useful frequency to be respectively induced, which sometimes also changes over time. Due to the aforementioned useful vibrations, in particular in the case where the useful vibrations are bending vibrations, Coriolis forces are induced, which are known to also depend on the instantaneous mass flow in the flowing medium. These forces can in turn lead to Coriolis vibrations which depend on the mass flow and are respectively superimposed on the useful vibrations at useful frequencies, so that between the inlet-side vibration movement and the outlet-side vibration movement of each tube, useful vibrations are carried out and, while being flowed through by the fluid, a propagation time difference or phase difference can be detected, which also depends on the mass flow, i.e. can also be used as a measure for mass flow measurement. In the case of at least partially curved tubes (wherein a vibration shape which allows the tube to oscillate in the manner of a cantilever clamped at one end is selected for the useful vibrations), the resulting Coriolis vibrations correspond, for example, to bending vibration modes (sometimes also referred to as twisting modes), in which the tubes respectively vibrate rotationally about an associated imaginary rotational vibration axis oriented perpendicularly to the mentioned imaginary vibration axis. In addition, the measuring transducer has a sensor assembly for sensing the mechanical vibrations of the tube assembly (i.e., in particular the aforementioned bending vibrations of the tubes) and generating measurement signals which represent the vibration movement of one or more tubes respectively and are formed by means of four structurally identical electrodynamic vibration sensors.

[0007] The tube of the aforementioned tube assembly or the tube of the measuring transducer formed therefrom respectively has: at least one straight first partial section, which is connected to the first flow divider of the tube assembly, i.e., forms the first end of the tube; an arcuate second partial section, which adjoins the first partial section; a straight third partial section, which adjoins the second partial section; an arcuate fourth partial section, which adjoins the third partial section; a straight fifth partial section, which adjoins the fourth partial section; an arcuate sixth partial section, which adjoins the fifth partial section; and a straight seventh partial section, which adjoins the sixth partial section and is connected to the second flow divider of the tube assembly, i.e., forms the second end of the tube. The first partial section and the seventh partial section can be connected to the respective flow divider in a bonding manner, for example by brazing or welding, or in a force-fitting and / or positive-locking manner by extrusion and / or rolling.

[0008] Each of the first and seventh partial sections, each of the second and sixth partial sections, and each of the third and fifth partial sections of the corresponding tubes respectively form a pair of structurally identical partial sections. In addition, all straight partial sections are respectively hollow cylindrical, wherein the first partial sections are of the same shape and size, and wherein the seventh partial sections are of the same shape and size as each other and are the same as the first partial sections, so that the section length of each of the first and seventh partial sections of the first and second tubes is respectively equal to the section length of the other of the first and seventh partial sections of the first and second tubes. In addition, the tubes are designed and arranged so that the first partial sections extend respectively parallel to each other, the third partial sections extend respectively parallel to each other, the fifth partial sections extend respectively parallel to each other, and the seventh partial sections extend respectively parallel to each other.

[0009] In addition, the arc-shaped second partial segment, the fourth partial segment and the sixth partial segment are respectively arc-shaped, so that each arc-shaped partial segment has a segment length (arc length) corresponding to the extension length of the imaginary arc center line of the partial segment, an arc radius corresponding to the radius of the imaginary arc center line, and a center point angle corresponding to the ratio of the segment length to the arc radius. In addition, the tubes are also designed and arranged so that at least the second partial segments of the first tube and the second tube projected onto the first symmetry plane extend parallel to the second partial segments of the third tube and the fourth tube, and at least the sixth partial segments of the first tube and the second tube projected onto the first symmetry plane extend parallel to the sixth partial segments of the third tube and the fourth tube.

[0010] In the measuring transducers shown in US-A 2012 / 0192658 or US-A 2017 / 0261474, the two tubes belonging to the first pair of structurally identical tubes also specifically have the same tube length as the other two tubes belonging to the corresponding other second pair of structurally identical tubes. For this purpose, the tubes are also designed and arranged so that the fourth partial sections of the first tube and the second tube projected onto the first symmetry plane also extend parallel to the fourth partial sections of the third tube and the fourth tube. In addition, the first tube and the third tube located in the aforementioned common first tube plane and the second tube and the fourth tube located in the common second tube plane are respectively rigidly coupled to each other by means of gussets. In contrast, in the measuring transducer shown in US-A 2017 / 0356777, two tubes belonging to a first pair of structurally identical tubes each have a different tube length than the other two tubes belonging to a corresponding other second pair of structurally identical tubes, so that the first tube and the second tube each have a greater tube length than the third tube and the fourth tube, wherein for this purpose the segment length of each of the straight third and fifth partial segments of the first tube and the second tube is respectively greater than the segment length of each of the straight third and fifth partial segments of the third tube and the fourth tube. Thus, such a tube assembly is formed by means of four tubes that essentially have the same natural or resonant frequency only in pairs (i.e. two mechanical oscillators), i.e. here the first or second pair of structurally identical tubes, can essentially (i.e. already without additional gussets coupling the structurally identical tubes in pairs) provide spectra that deviate significantly from one another, i.e. have natural or resonant frequencies that deviate from one another in at least one fundamental bending vibration mode.

[0011] As also discussed in particular in US-A 2012 / 0192658 or US-A 2017 / 0261474, the measurement accuracy achieved by means of a measurement system formed by such a measurement transducer may also depend in particular on the individual flow resistances of the four flow paths of the tube assembly formed by means of the tubes or on the extent to which one of the flow resistances deviates from each of the other flow resistances, respectively. For example, US-A 2012 / 0192658 proposes to design the tubes of the tube assembly so that four parallel flow paths having the same flow resistance are provided, respectively, while US-A 2017 / 0356777 proposes to form four tubes (i.e., thereby providing four parallel flow paths) with flow resistances that deviate from each other, so that although two structurally identical tubes naturally cause the same flow resistance, respectively, one of the two oscillators has a higher natural frequency in the associated fundamental bending vibration mode than the other of the two oscillators, which generally cancels out the smaller partial flow resistance of the flowing fluid compared to the partial flow resistance of the other of the two oscillators.

[0012] Further investigations of measuring transducers of the type in question have also shown that, in the case of a measuring transducer formed solely by means of pairs of structurally identical tubes, for example according to US-A 2017 / 0356777 or US-A 2012 / 0192658, not only the aforementioned flow resistance itself but also the deviation between a first partial flow resistance formed as a whole by the first pair of structurally identical tubes and a second partial flow resistance formed as a whole by the second pair of structurally identical tubes can be greatly influenced by the flowing fluid itself, i.e. can in particular depend on the Reynolds number (Re) of the fluid flowing in the process pipeline; this in particular makes it possible for the aforementioned first partial flow resistance to deviate significantly from the aforementioned second partial flow resistance even in the case of single-phase liquids with an increased Reynolds number and, concomitantly, for the first partial mass flow established by the first pair of structurally identical tubes to deviate equally from the second partial mass flow established by the second pair of structurally identical tubes, wherein said relative deviation of the two partial flow resistances or of the two partial mass flows can also be subject to considerable fluctuations during operation of the corresponding measuring system. Summary of the invention

[0013] Based on the aforementioned prior art, the object of the present invention is to improve the type of pipe assembly in question or the measuring transducer formed thereby so as to achieve the following effect: the deviation (Δm) between the aforementioned partial flow resistances of the flow path formed by means of only pairs of structurally identical pipes or the resulting deviation between the first partial mass flow and the second partial mass flow is, on the one hand, as small as possible and, on the other hand, largely independent of the Reynolds number of the fluid flowing in the pipeline, so that for a fluid flowing in a process pipeline with a Reynolds number between 2000 and 100000 (Re=2000...100000) and / or for a mass flow in a process pipeline with a Reynolds number that varies with a fluctuation width (ΔRe) greater than 20000 (ΔRe=20000), the corresponding deviation between the first partial mass flow and the second partial mass flow is no greater than 2% of the corresponding maximum of the two partial mass flows. Furthermore, the aforementioned deviation (Δm) between the first partial mass flow and the second partial mass flow should, at least within the aforementioned Reynolds number range (ΔRe) (i.e. between 2000 and 100000 and / or extending beyond 20000), have at most a total fluctuation width of less than 1% of the largest of the two partial mass flows and / or less than 50% of the maximum deviation between the two partial mass flows; this is particularly true if the design of the measuring transducer remains as compact as possible.

[0014] To achieve this object, the present invention comprises a measuring transducer for an electronic vibration measuring system for measuring at least one measured variable of a flowing fluid, the measuring transducer comprising:

[0015] A pipe assembly, the pipe assembly: having a curved first pipe, the first pipe being, for example, at least partially V-shaped and / or a single piece; having a curved second pipe, the second pipe having the same structure as the first pipe; having a curved third pipe, i.e., for example, at least partially V-shaped and / or a single piece; having a curved fourth pipe, the fourth pipe having the same structure only as the third pipe; having a first splitter, the first splitter being, for example, used as a pipeline branching unit and / or being located on the inlet side, the first splitter having four flow openings; and having a second splitter, the second splitter being, for example, having the same structure as the first splitter and / or being used as a pipeline merging unit and / or being located on the outlet side, the second splitter having four flow openings;

[0016] an exciter assembly for inducing and maintaining mechanical vibration of the tube assembly, i.e., for example, bending vibration of each of the first tube, the second tube, the third tube, and the fourth tube about a respective rest position; and

[0017] A sensor assembly for sensing mechanical vibrations of a tube assembly, i.e., for example, bending vibrations of each of a first tube, a second tube, a third tube and a fourth tube about a respective rest position, and for generating a vibration measurement signal representing the vibration movement of one or more of the first tube, the second tube, the third tube and the fourth tube, respectively. In the measuring transducer according to the invention, each of the first tube, the second tube, the third tube and the fourth tube, respectively, extends from a respective first end of the respective tube to a respective second end of the tube, the tube length of the tube in each case corresponding to the extension length of an imaginary center line of the tube, and each of the first tube, the second tube, the third tube and the fourth tube, respectively, has a tube wall, in particular a metal tube wall, and an inner cavity surrounded thereby. In addition, each of the first tube, the second tube, the third tube and the fourth tube is respectively connected to each of the first splitter and the second splitter, so that the first tube opens to the first flow opening of the first splitter with its first end and opens to the first flow opening of the second splitter with its second end, the second tube opens to the second flow opening of the first splitter with its first end and opens to the second flow opening of the second splitter with its second end, the third tube opens to the third flow opening of the first splitter with its first end and opens to the third flow opening of the second splitter with its second end, and the fourth tube opens to the fourth flow opening of the first splitter with its first end and opens to the fourth flow opening of the second splitter with its second end. Each of the first tube, the second tube, the third tube and the fourth tube of the measuring transducer according to the present invention has at least one straight first partial section connected to the first flow divider, a circular arc-shaped second partial section adjacent to the first partial section, a cylindrical third partial section adjacent to the second partial section, a circular arc-shaped fourth partial section adjacent to the third partial section, a straight fifth partial section adjacent to the fourth partial section and having the same shape and the same size as the corresponding third partial section, a circular arc-shaped sixth partial section adjacent to the fifth partial section and having the same shape and the same size as the corresponding second partial section, and a cylindrical third partial section adjacent to the sixth partial section and connected to the first flow divider. The second splitter is a straight seventh partial segment with the same shape and size as the first partial segment, wherein each of the (straight) first partial segment, the third partial segment, the fifth partial segment and the seventh partial segment respectively has a segment length corresponding to the length of the corresponding imaginary longitudinal axis of the partial segment, and each of the (arc-shaped) second partial segment, the fourth partial segment and the sixth partial segment respectively has a segment length (arc length) corresponding to the extension length of the imaginary arc center line of the partial segment, an arc radius corresponding to the radius of the imaginary arc center line, and a center point angle corresponding to the ratio of the segment length to the arc radius.In addition, in the measuring transducer according to the present invention, the second partial segments have the same shape and the same size, so that the segment length, arc radius and center point angle of each of the second partial segments are respectively equal to the segment length, arc radius and center point angle of each of the other second partial segments; and the sixth partial segments have the same shape and the same size, so that the segment length, arc radius and center point angle of each of the sixth partial segments are respectively equal to the segment length, arc radius and center point angle of each of the other sixth partial segments.

[0018] Furthermore, the present invention also comprises an electronic vibration measuring system for measuring and / or monitoring at least one flow parameter, such as a flow parameter that changes over time, i.e., for example, mass flow, volume flow and / or flow velocity; and / or for measuring and / or monitoring at least one material parameter, such as a material parameter that changes over time, i.e., for example, density and / or viscosity of a flowing fluid, such as a gas, a liquid or a dispersion, the measuring system comprising a measuring transducer according to the present invention, and an electronic measuring and operating system (e.g., formed by means of at least one microprocessor and / or by means of at least one digital signal processor), which is electrically coupled to its exciter component and its sensor component (e.g., by means of electrical connecting lines).

[0019] Furthermore, the invention also comprises the use of the aforementioned measuring transducer or the aforementioned formed thereby for measuring and / or monitoring a fluid (eg a liquid flowing with a mass flow rate greater than 800 t / h) flowing in a pipeline (eg having a nominal diameter exceeding 100 mm).

[0020] According to the first embodiment of the present invention, it is further provided that the respective tube length of each of the first tube and the second tube is respectively greater than the tube length of each of the third tube and the fourth tube, that is, for example, respectively greater than 101% of the tube length of the third tube or the fourth tube and / or respectively less than 105% of the tube length of the third tube or the fourth tube.

[0021] According to the second embodiment of the present invention, it is further provided that each of the first sub-segment, the third sub-segment, the fifth sub-segment and the seventh sub-segment is respectively hollow cylindrical.

[0022] According to the third embodiment of the present invention, it is further provided that the corresponding segment length of each of the first partial segment and the seventh partial segment of the third tube and the fourth tube is respectively greater than the segment length of each of the first partial segment and the seventh partial segment of the first tube and the second tube, that is, for example, not less than 200% of the segment length of the first partial segment and the seventh partial segment of the first tube and the second tube, respectively, and / or not more than 400% of the segment length of the first partial segment and the seventh partial segment of the first tube and the second tube, respectively.

[0023] According to a fourth embodiment of the present invention, it is further provided that the first, second, third and fourth tubes are designed and arranged such that the first subsections or their longitudinal axes extend parallel to one another and the seventh subsections or their longitudinal axes extend parallel to one another.

[0024] According to a fifth embodiment of the present invention, it is further provided that the first, second, third and fourth tubes are designed and arranged such that the third subsections or their longitudinal axes extend parallel to one another and the fifth subsections or their longitudinal axes extend parallel to one another.

[0025] According to the sixth embodiment of the present invention, it is further provided that the first and seventh sections of the first and second tubes have the same shape and size, and the first and seventh sections of the third and fourth tubes have the same shape and size.

[0026] According to the seventh embodiment of the present invention, it is further provided that the first partial section and the seventh partial section of the third tube and the fourth tube are respectively larger than the first partial section and the seventh partial section of the first tube and the second tube, so that the section lengths of the first partial section and the seventh partial section of the third tube and the fourth tube are respectively larger than the section lengths of the first partial section and the seventh partial section of the first tube and the second tube.

[0027] According to the eighth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, and the caliber is not less than 20 mm, for example, also greater than 40 mm, and / or equal to the caliber of each of the first tube, the second tube, the third tube or the fourth tube.

[0028] According to a ninth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding segment length of each of the first partial section and the seventh partial section of the first tube and the second tube is not less than 20% of the caliber of the corresponding first tube or second tube.

[0029] According to the tenth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding segment length of each of the first partial segment and the seventh partial segment of the third tube and the fourth tube is not less than 100% of the caliber of the corresponding third tube or fourth tube.

[0030] According to the eleventh embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding segment length of each of the first partial section and the seventh partial section of the first tube and the second tube respectively does not exceed 100% of the caliber of the corresponding first tube or second tube.

[0031] According to the twelfth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding segment length of each of the first partial segment and the seventh partial segment of the fourth tube and the third tube does not exceed 300% of the caliber of the corresponding third tube or fourth tube.

[0032] According to the thirteenth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding segment length of each of the second partial section, the third partial section, the fourth partial section, the fifth partial section and the sixth partial section is not less than 150% of the caliber of the corresponding first tube, the second tube, the third tube or the fourth tube.

[0033] According to the fourteenth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that the corresponding arc radius of each of the second partial segment, the fourth partial segment, the fifth partial segment and the sixth partial segment is not less than 150% of the caliber of the corresponding first tube, the second tube, the third tube or the fourth tube.

[0034] According to the fifteenth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example not less than 20 mm, so that each of the first tube, the second tube, the third tube and the fourth tube respectively has a tube length to caliber ratio, which is measured as the quotient of the corresponding tube length and the corresponding caliber, which is greater than 25 (25:1), that is, for example less than 30 (30:1).

[0035] According to the sixteenth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a caliber corresponding to the maximum inner diameter of the tube, for example, not less than 20 mm, so that each of the first partial section, the third partial section, the fifth partial section and the seventh partial section respectively has a caliber that remains the same over its corresponding section length.

[0036] According to the seventeenth embodiment of the present invention, it is further provided that the respective arc radius of each of the fourth partial sections of the first tube and the second tube is not less than 130% of the arc radius of the fourth partial sections of the third tube and the fourth tube.

[0037] According to an eighteenth embodiment of the present invention, it is further provided that a corresponding arc radius of each of the second partial segment, the third partial segment, the fourth partial segment, the fifth partial segment and the sixth partial segment is not less than 50 mm.

[0038] According to a nineteenth embodiment of the present invention, it is further provided that the respective arc radius of each of the fourth partial sections of the third tube and the fourth tube is equal to the arc radius of each of the second partial section or the sixth partial section.

[0039] According to a twentieth embodiment of the present invention, it is further provided that a respective segment length of each of the fourth partial segments of the first tube and the second tube is not less than 130% of the segment length of the fourth partial segments of the third tube and the fourth tube.

[0040] According to a twenty-first embodiment of the present invention, it is further provided that the center point angle of each of the fourth partial segments is respectively equal to the center point angle of each of the other fourth partial segments.

[0041] According to the twenty-second embodiment of the present invention, it is further provided that the center point angle of each of the fourth partial segments is respectively greater than the center point angle of each of the second partial segments and the sixth partial segments, that is, for example, the center point angle of each of the fourth partial segments is respectively twice the center point angle of each of the second partial segments and the sixth partial segments.

[0042] According to the twenty-third embodiment of the present invention, it is further provided that the fourth partial segments of the first tube and the second tube have the same shape and the same size, so that the segment length, arc radius and center point angle of each of the fourth partial segments of the first tube and the second tube are respectively equal to the segment length, arc radius and center point angle of the corresponding other one of the fourth partial segments of the first tube and the second tube, and the fourth partial segments of the third tube and the fourth tube have the same shape and the same size, so that the segment length, arc radius and center point angle of each of the fourth partial segments of the third tube and the fourth tube are respectively equal to the segment length, arc radius and center point angle of the corresponding other one of the fourth partial segments of the third tube and the fourth tube.

[0043] According to the twenty-fourth embodiment of the present invention, it is further provided that the fourth partial sections of the first tube and the second tube are respectively larger than the fourth partial sections of the third tube and the fourth tube, so that the section length of each of the fourth partial sections of the first tube and the second tube is respectively larger than the section length of each of the fourth partial sections of the third tube and the fourth tube, that is, for example, greater than 130% and / or less than 200% of the section length of each of the fourth partial sections of the third tube and the fourth tube.

[0044] According to the twenty-fifth embodiment of the present invention, it is further provided that the arc radius of each of the fourth partial sections of the first tube and the second tube is respectively greater than the arc radius of each of the fourth partial sections of the third tube and the fourth tube, that is, for example, 200% of the arc radius of each of the fourth partial sections of the third tube and the fourth tube.

[0045] According to the twenty-sixth embodiment of the present invention, it is further provided that the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the fourth partial segment or the imaginary arc-shaped center lines of the fourth partial segment projected on the first symmetry plane extend parallel to each other.

[0046] According to the twenty-seventh embodiment of the present invention, it is further provided that the minimum wall thickness of the tube wall of the first tube and the minimum wall thickness of the tube wall of the second tube are respectively equal to the minimum wall thickness of the tube wall of the third tube and respectively equal to the minimum wall thickness of the tube wall of the fourth tube.

[0047] According to a twenty-eighth embodiment of the invention, it is further provided that the tube wall of each of the first, second, third and fourth tubes consists of the same material, ie for example in each case stainless steel or a nickel-based alloy.

[0048] According to the twenty-ninth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube, and the fourth tube is respectively connected to both the first flow divider and the second flow divider in a combined manner.

[0049] According to a thirtieth embodiment of the present invention, it is further provided that the tube assembly has exactly four tubes, ie, except for the first tube, the second tube, the third tube and the fourth tube, no other tubes are connected to the first flow divider and the second flow divider.

[0050] According to the thirty-first embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane.

[0051] According to the thirty-second embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane, so that the minimum distance between the first tube and the first symmetry plane of the tube assembly is equal to the minimum distance between the third tube and the first imaginary symmetry plane of the tube assembly.

[0052] According to the thirty-third embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane, so that the minimum distance between the second tube and the first symmetry plane of the tube assembly is equal to the minimum distance between the fourth tube and the first imaginary symmetry plane of the tube assembly.

[0053] According to the thirty-fourth embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane, so that each of the first tube, the second tube, the third tube and the fourth tube is parallel to the first symmetry plane of the tube assembly.

[0054] According to the thirty-fifth embodiment of the present invention, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane, so that the tube assembly has a second symmetry plane of the tube assembly, which is perpendicular to the first symmetry plane of the tube assembly but imaginarily intersects with each of the first tube, the second tube, the third tube and the fourth tube, that is, for example, intersects with their corresponding fourth partial sections, and is mirror-symmetrical about the second symmetry plane of the tube assembly.

[0055] According to the thirty-sixth embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a first symmetry plane and a second symmetry plane perpendicular thereto, and wherein each of the first tube, the second tube, the third tube and the fourth tube respectively is mirror-symmetrical to the associated first symmetry plane and the associated second symmetry plane.

[0056] According to the thirty-seventh embodiment of the present invention, the tube assembly has: a first imaginary connecting axis, which imaginarily connects the center point of the first flow opening of the first diverter and the center point of the first flow opening of the second diverter to each other; a second imaginary connecting axis, which imaginarily connects the center point of the second flow opening of the first diverter and the center point of the second flow opening of the second diverter to each other; a third imaginary connecting axis, which imaginarily connects the center point of the third flow opening of the first diverter and the center point of the third flow opening of the second diverter to each other; and a fourth imaginary connecting axis, which imaginarily connects the center point of the fourth flow opening of the first diverter and the center point of the fourth flow opening of the second diverter to each other, so that each imaginary connecting axis extends parallel to each other of the said connecting axes.

[0057] The thirty-eighth embodiment of the present invention stipulates that the tube assembly has: a first imaginary connecting axis, which imaginarily connects the center point of the first flow opening of the first splitter and the center point of the first flow opening of the second splitter to each other; a second imaginary connecting axis, which imaginarily connects the center point of the second flow opening of the first splitter and the center point of the second flow opening of the second splitter to each other; a third imaginary connecting axis, which imaginarily connects the center point of the third flow opening of the first splitter and the center point of the third flow opening of the second splitter to each other; and a fourth imaginary connecting axis, which imaginarily connects the center point of the fourth flow opening of the first splitter and the center point of the fourth flow opening of the second splitter to each other, and each tube has a tube arc height, respectively, The tube arc height is measured as the (maximum) distance of the vertex of the respective fourth partial section from the associated imaginary connecting axis, i.e., the imaginary connecting axis is the connecting axis imaginarily connecting the respective first end and the second end of the respective tube, wherein the tube arc height is selected such that each tube has a tube length to tube arc height ratio, measured as the quotient of the tube length of the respective tube and the respective tube arc height, which is greater than 2 (2:1), i.e., for example, greater than 2.5 (2.5:1), and less than 5 (5:1), i.e., for example, less than 3 (3:1), and / or each tube has a diameter to tube arc height ratio, measured as the quotient of the diameter of the respective tube and the respective tube arc height, which is greater than 0.1, i.e., for example, less than 0.2.

[0058] The thirty-ninth embodiment of the present invention stipulates that the tube assembly has: a first imaginary connecting axis, which imaginarily connects the center point of the first flow opening of the first diverter and the center point of the first flow opening of the second diverter; a second imaginary connecting axis, which imaginarily connects the center point of the second flow opening of the first diverter and the center point of the second flow opening of the second diverter; a third imaginary connecting axis, which imaginarily connects the center point of the third flow opening of the first diverter and the center point of the third flow opening of the second diverter, and a fourth imaginary connecting axis, which imaginarily connects the center point of the fourth flow opening of the first diverter and the center point of the fourth flow opening of the second diverter, and the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that each first partial section is respectively aligned with the associated imaginary connecting axis, that is, the imaginary connecting axis is a connecting axis that imaginarily connects the corresponding first end and the second end of the corresponding tube, for example, so that the imaginary longitudinal axis of each of the first partial sections coincides with the associated imaginary connecting axis.

[0059] The fortieth embodiment of the present invention stipulates that the tube assembly has: a first imaginary connecting axis, which imaginarily connects the center point of the first flow opening of the first diverter and the center point of the first flow opening of the second diverter; a second imaginary connecting axis, which imaginarily connects the center point of the second flow opening of the first diverter and the center point of the second flow opening of the second diverter; a third imaginary connecting axis, which imaginarily connects the center point of the third flow opening of the first diverter and the center point of the third flow opening of the second diverter; and a fourth imaginary connecting axis, which imaginarily connects the center point of the fourth flow opening of the first diverter and the center point of the fourth flow opening of the second diverter, and the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that each of the seventh partial sections is respectively aligned with the associated imaginary connecting axis, that is, the imaginary connecting axis is a connecting axis that imaginarily connects the corresponding first end and the second end of the corresponding tube, for example, so that the imaginary longitudinal axis of each of the seventh partial sections coincides with the associated imaginary connecting axis.

[0060] According to the forty-first embodiment of the present invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube is respectively configured to conduct fluid in its corresponding inner cavity, that is, for example, the fluid flows from its corresponding first end in the direction of its corresponding second end while allowing vibration.

[0061] According to a forty-second embodiment of the present invention, it is further provided that the sensor assembly has a first vibration sensor (which is, for example, electric), a second vibration sensor (which is, for example, electric and / or has the same structure as the first vibration sensor), a third vibration sensor (which is, for example, electric and / or has the same structure as the first vibration sensor), and at least one fourth vibration sensor (which is, for example, electric and / or has the same structure as the third vibration sensor). Further developing this embodiment of the present invention, it is further provided that the first vibration sensor is attached to the third partial section of the first tube at a distance from both the second partial section of the first tube and the fourth partial section of the first tube, and is attached to the third partial section of the second tube at a distance from both the second partial section of the second tube and the fourth partial section of the second tube; the second vibration sensor is attached to the fifth partial section of the first tube at a distance from both the sixth partial section of the first tube and the fourth partial section of the first tube, and is attached to the sixth partial section of the second tube at a distance from both the sixth partial section of the second tube and the fourth partial section of the second tube. The first vibration sensor and the second vibration sensor are connected to the third section of the third tube at a distance from the second section of the third tube and the fourth section of the third tube, and are connected to the third section of the fourth tube at a distance from the second section of the fourth tube and the fourth section of the fourth tube; and the fourth vibration sensor is connected to the fifth section of the third tube at a distance from the sixth section of the third tube and the fourth section of the third tube, and are connected to the fifth section of the fourth tube at a distance from the sixth section of the fourth tube and the fourth section of the fourth tube. Alternatively or additionally, the first vibration sensor and the second vibration sensor may be spaced apart from the fourth section of the first tube by the same distance and the fourth section of the second tube by the same distance, and / or the third vibration sensor and the fourth vibration sensor may be spaced apart from the fourth section of the third tube by the same distance and the fourth section of the fourth tube by the same distance.

[0062] According to a forty-third embodiment of the present invention, it is further provided that the exciter assembly has: a first vibration exciter, which is, for example, electric; and at least one second vibration exciter, which is, for example, electric and / or has the same structure as the first vibration exciter. Further developing this embodiment of the present invention, it is further provided that the first vibration exciter is attached to the fourth partial section of the first tube at a distance from both the third partial section of the first tube and the fifth partial section of the first tube, and is attached to the fourth partial section of the second tube at a distance from both the third partial section of the second tube and the fifth partial section of the second tube, and the second vibration exciter is attached to the fourth partial section of the third tube at a distance from both the third partial section of the third tube and the fifth partial section of the third tube, and is attached to the fourth partial section of the fourth tube at a distance from both the third partial section of the fourth tube and the fifth partial section of the fourth tube. For example, the first vibration exciter can be spaced apart from the third partial section of the first tube and the fifth partial section of the first tube by the same distance, and can be spaced apart from the third partial section of the second tube and the fifth partial section of the second tube by the same distance, and / or the second vibration exciter can be spaced apart from the third partial section of the third tube and the fifth partial section of the third tube by the same distance, and can be spaced apart from the third partial section of the fourth tube and the fifth partial section of the fourth tube by the same distance, respectively.

[0063] According to a forty-fourth embodiment of the present invention, it is further provided that the first flow divider has a first connecting flange (e.g., for connecting the pipe assembly to a pipeline section of a process pipeline supplying fluid), and the second flow divider has a second connecting flange (e.g., for connecting the pipe assembly again to a pipeline section of a process pipeline discharging fluid). Further developing this embodiment of the present invention, it is further provided that each connecting flange has a sealing surface, respectively, for connecting the pipe assembly to a corresponding corresponding pipeline section of the process pipeline in a fluid-tight or leak-free manner. Each sealing surface of each of the first connecting flange and the second connecting flange may have a minimum diameter, respectively (e.g., a diameter greater than 100 mm and / or a diameter defining the nominal diameter of the measuring transducer), or the minimum distance between the sealing surfaces of the first connecting flange and the second connecting flange may define the installation length of the pipe assembly or the measuring transducer formed thereby (e.g., an installation length greater than 1000 mm and / or less than 3000 mm).

[0064] According to a development of the present invention, the measuring transducer also includes a transducer housing, which surrounds the first tube, the second tube, the third tube and the fourth tube, and it is further provided that the transducer housing has at least one cavity (for example a sealed closed cavity), and each of the first tube, the second tube, the third tube and the fourth tube is arranged in the cavity.

[0065] According to a first embodiment of a development of the invention, it is further provided that the transducer housing has a compressive strength of greater than 50 bar.

[0066] According to a second embodiment of a development of the present invention, it is further provided that the compressive strength of the transducer housing is greater than the maximum compressive strength of the first tube, the second tube, the third tube and the fourth tube.

[0067] According to a third embodiment of a development of the invention, it is further provided that each of the first tube, the second tube, the third tube and the fourth tube respectively has a minimum distance from the transducer housing which is greater than 5 mm and / or less than 10 mm.

[0068] According to a fourth embodiment of a development of the invention, it is further provided that the transducer housing has a support element (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical), which extends from a first end to a second end with a support element length, wherein the support element is mechanically connected (i.e., for example coupled) to the first shunt at its first end and mechanically connected to the second shunt at its second end.

[0069] According to a fifth embodiment of a development of the invention, it is further provided that the transducer housing has a support element (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical) which extends from a first end to a second end with a support element length, wherein the support element is mechanically connected (i.e., for example bonded) to the first shunt at its first end and mechanically connected to the second shunt at its second end, and wherein the support element has at least one hollow space which is surrounded by a wall (e.g., a metal wall) and forms a partial area of ​​the cavity. The wall of the support element can be made of, for example, steel (i.e., stainless steel or structural steel) and / or of the same material as the tube wall of each of the first, second, third and fourth tubes.

[0070] According to a sixth embodiment of a development of the invention, it is further provided that the transducer housing has a support element (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical), which extends from a first end to a second end with a support element length, wherein the support element is mechanically connected (i.e., for example bonded) to the first shunt at its first end and mechanically connected to the second shunt at its second end, and wherein the support element has at least one hollow space which is surrounded by a wall (e.g. a metal wall) and forms a partial area of ​​the cavity, wherein the first tube, the second tube, the third tube and each of the fourth tubes is only partially arranged in the hollow space of the support element; this, for example, also makes each of the second partial sections of each of the first tube, the second tube, the third tube and the fourth tube at least mainly arranged in the hollow space of the support element, and / or each of the sixth partial sections of each of the first tube, the second tube, the third tube and the fourth tube at least mainly arranged in the hollow space of the support element, and / or each of the third partial section and the fifth partial section of each of the first tube, the second tube, the third tube and the fourth tube at least mainly arranged outside the hollow space of the support element.

[0071] A seventh embodiment of a development of the invention provides that the transducer housing has a support element (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical) which extends from a first end to a second end with a support element length, wherein the support element is mechanically connected (i.e., for example bonded) to the first shunt at its first end and mechanically connected to the second shunt at its second end, and wherein the support element has at least one hollow space which is surrounded by a wall (e.g. a metal wall) and forms a partial area of ​​the cavity, wherein each of the first, second, third and fourth tubes is only partially arranged in the hollow space of the support element, and it is further provided that the wall of the support element has a first opening and at least one second opening spaced apart from the first opening along an imaginary envelope of the wall, wherein each of the first opening and the second opening respectively forms a partial area of ​​the cavity of the transducer housing, and wherein the first, second, third and fourth tubes Each of the fourth tubes extends through both the first opening and the second opening, respectively; this, for example, also makes it possible that within the first opening and the second opening, the corresponding minimum distance between the first tube and the third tube is respectively smaller than the minimum distance between the fourth partial section of the first tube and the fourth partial section of the third tube, and / or within the first opening and the second opening, the corresponding minimum distance between the second tube and the fourth tube is respectively smaller than the minimum distance between the fourth partial section of the second tube and the fourth partial section of the fourth tube, and / or each of the first tube, the second tube, the third tube and the fourth tube has a minimum distance from the edge of the first opening, and each of the minimum distances from the edge of the first opening is greater than 5 mm and / or less than 10 mm, and / or each of the first tube, the second tube, the third tube and the fourth tube has a minimum distance from the edge of the second opening, and each of the minimum distances from the edge of the second opening is greater than 5 mm and / or less than 10 mm.

[0072] According to an eighth embodiment of the development of the present invention, it is further provided that the transducer housing has: a support element (for example, also one of the aforementioned support elements) (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical), which extends from a first end to a second end with a support element length; and a shell element (which is, for example, cap-shaped or tubular), wherein the support element is mechanically connected (i.e., for example, coupled) to the first shunt at its first end and connected to the second shunt at its second end, and wherein the shell element is mechanically connected (i.e., for example, coupled) to the support element.

[0073] A ninth embodiment of a development of the invention provides that the transducer housing comprises: a support element (e.g. also one of the aforementioned support elements) (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical), which extends from a first end to a second end with a support element length; and a housing element (which is, for example, cap-shaped or tubular), wherein the support element is mechanically connected (i.e., for example bonded) to the first shunt at its first end and mechanically connected to the second shunt at its second end, and wherein the housing element is mechanically connected (i.e., for example bonded) to the support element, and it is further provided that the housing element has a hollow space which is surrounded by a wall (e.g., a metal wall). Surrounding and forming a partial area of ​​the cavity, and each of the first tube, the second tube, the third tube and the fourth tube is only partially arranged in the hollow space of the housing element; this, for example, also makes each of the fourth partial sections of each of the first tube, the second tube, the third tube and the fourth tube be exclusively arranged in the hollow space of the housing element, and / or each of the third partial section and the fifth partial section of each of the first tube, the second tube, the third tube and the fourth tube be at least mainly arranged in the hollow space of the housing element, and / or each of the second partial section and the sixth partial section of each of the first tube, the second tube, the third tube and the fourth tube be at least mainly arranged outside the hollow space of the housing element.

[0074] A tenth embodiment of a development of the present invention provides that the transducer housing has: a support element (e.g., also one of the aforementioned support elements) (which is, for example, cylindrical and / or tubular and / or at least partially hollow cylindrical), which extends from a first end to a second end with a support element length; and a housing element (which is, for example, cap-shaped or tubular), wherein the support element is mechanically connected (i.e., for example, bonded) to the first shunt at its first end and mechanically connected to the second shunt at its second end, and wherein the housing element is mechanically connected (i.e., for example, bonded) to the support element, and it is further provided that the housing element has a hollow space, which is surrounded by a wall (e.g., a metal wall) and forms a partial area of ​​the cavity, and each of the first tube, the second tube, the third tube and the fourth tube Only partially arranged in the hollow space of the housing element, wherein the wall of the housing element together with a section of the wall of the supporting element surrounds the hollow space forming a partial area of ​​the cavity, and wherein each of the first tube, the second tube, the third tube and the fourth tube is only partially arranged in the hollow space of the housing element; this also, for example, makes each of the fourth partial sections of each of the first tube, the second tube, the third tube and the fourth tube exclusively arranged in the hollow space, and / or each of the third partial section and the fifth partial section of each of the first tube, the second tube, the third tube and the fourth tube at least mainly arranged in the hollow space, and / or each of the second partial section and the sixth partial section of each of the first tube, the second tube, the third tube and the fourth tube at least mainly arranged outside the hollow space.

[0075] The basic idea of ​​the invention is to minimize the aforementioned deviation of the first partial mass flow and the second partial mass flow through the measuring transducer (which not only impairs the measuring accuracy of conventional vibratory electronic measuring systems of the type mentioned at the outset but is also accompanied by a deviation between the first partial flow resistance and the second partial flow resistance) or to minimize its dependence on the Reynolds number of the fluid flowing in the pipeline, wherein the second partial sections and the sixth partial sections of all four tubes are identical in shape and identical in size, so that the radial or centrifugal accelerations acting in the partial mass flow on the input side or the output side, respectively, are essentially the same. Along with this, the flow profile of the partial mass flow can also be improved compared to the previous situation in conventional tube assemblies with four elbows or in vibratory measuring transducers formed therefrom (see Fig.10 ) is formed more evenly.

[0076] The invention also has the advantage that the aforementioned second and sixth partial segments (i.e. eight of the twelve circular arc-shaped partial segments of the four tubes in total) are identical in structure, i.e. they all have the same segment length and the same arc radius and center point angle, so that the production of the four tubes can be significantly simplified and the production costs of the corresponding tube assembly can ultimately be reduced accordingly. Furthermore, a further advantage can be seen in that the tube assembly can of course also be formed with the aid of conventional flow dividers, wherein the slight deviations in the distances of the circular arc-shaped partial segments from the respective nearest first flow divider or second flow divider, which necessarily result from the use of eight identical circular arc-shaped partial segments, are compensated by a correspondingly adapted segment length of the straight first partial segment adjoining the circular arc-shaped second partial segment or the straight seventh partial segment adjoining the circular arc-shaped sixth partial segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The invention and its advantageous embodiments are explained in more detail below based on the exemplary embodiments shown in the drawings. Parts with the same or the same effect or the same function are provided with the same reference numerals in all the figures; for the sake of clarity or if it seems reasonable for other reasons, the previously mentioned reference numerals are omitted in the subsequent figures. Further advantageous embodiments or improvements (for example also combinations of partial aspects of the invention that were initially only explained individually) are also derived from the drawings and / or the claims themselves.

[0078] The accompanying drawings show in detail:

[0079] Figure 1 , Figure 2A , Figure 2B are various partial cross-sectional and / or perspective side views of the vibronic measurement system;

[0080] Figure 3A , Figure 3B is applicable according to Figure 1 , Figure 2A or Figure 2B Various partial cross-sectional and / or perspective side views of a measuring transducer of a vibronic measuring system;

[0081] Figure 4 , Figure 5A , Figure 5B are various partial cross-sectional and / or perspective side views of another variation of the vibronic measurement system;

[0082] Fig. 6A , Figure 6B is applicable according to Figure 4 , Figure 5A or Figure 5B Various partial cross-sectional and / or perspective side views of a measuring transducer of a vibronic measuring system;

[0083] Fig. 7A , Figure 7B is based on Figure 3A , Figure 3B or according to Fig. 6A , Figure 6B Two side views of a tube assembly of a measuring transducer;

[0084] Figure 8 , Fig.9A , Fig. 9B is based on Fig. 7A and Figure 7B three additional side views of the tube assembly; and

[0085] Fig.10 is an experimentally determined measurement of the (relative) deviation between the partial mass flows, i.e., using Fig. 7A and Figure 7B Measured values ​​determined for a tube assembly according to the invention or a measuring transducer formed therefrom ("the invention") and for a conventional measuring transducer formed by means of a tube assembly having four tubes of equal length ("the prior art"). DETAILED DESCRIPTION

[0086] Figure 1 , Figure 2A and Figure 2B or Figure 4 , Figure 5A and Figure 5BSchematically illustrated are exemplary embodiments or design variants of an electronic vibration measuring system for measuring and / or monitoring at least one, for example, time-varying flow parameter (e.g., mass flow, volume flow and / or flow velocity) and / or for measuring and / or monitoring at least one, for example, time-varying material parameter (e.g., density and / or viscosity) of a fluid FL1 that flows at least temporarily. The measuring system is particularly designed or configured to be integrated into a route for conducting a fluid FL1 serving as a measuring substance (i.e., for example, a gas, liquid or dispersion) and / or a process line designed as a line, and during operation at least temporarily the fluid FL1 supplied or discharged via the process line flows through.

[0087] The measuring system comprises: a measuring transducer MW having a tube assembly formed by means of four tubes (111, 121, 112, 122) and two flow dividers (21, 22) respectively connected thereto, the tubes being structurally identical only in pairs and having flow resistances that are offset from one another, for example, in order to provide parallel flow paths; an actuator assembly (31, 32) for inducing and maintaining mechanical vibrations of the tube assembly, in particular mechanical vibrations of its tubes; and a sensor assembly for sensing mechanical vibrations of the tube assembly, i.e., mechanical vibrations of the tubes, for example. In addition, a temperature measuring assembly for detecting the temperature in the tube assembly and / or a strain measuring assembly for detecting mechanical stresses in the tube assembly can also be arranged in the measuring transducer, for example.

[0088] The tube assembly of the measuring transducer according to the invention or the tube assembly of the measuring system formed therefrom is again Fig. 7A , Figure 7B , Figure 8 , Fig.9A or Fig. 9B , and has a curved first tube 111, a curved second tube 121 having the same structure as the tube 111, a curved third tube 112, and a fourth tube 122 having the same structure only as the tube 112, that is, it is neither the tube 111 nor the tube 121. In addition, the tube assembly has: a first flow divider 21 having four flow openings 21-1, 21-2, 21-3, 21-4; and a second flow divider 22, which has, for example, the same structure as the flow divider 21, and also has four flow openings 22-1, 22-2, 22-3, 22-4. Each of the tubes 111, 112, 121, 122 extends from a corresponding first end of the corresponding tube to a corresponding second end of the tube with a corresponding tube length, and has an inner cavity surrounded by a tube wall (e.g., a metal tube wall), and extends from a corresponding first end of the corresponding tube to a corresponding second end of the tube. In addition, as also shown respectively Figure 3A and Figure 3B or Fig. 6A and Figure 6B As shown or from Figure 2A , Figure 2B , Figure 3A , Figure 3B , Fig. 7A , Figure 7B and Figure 8 or Figure 5A , Figure 5B , Fig. 6A , Figure 6B , Fig. 7A , Figure 7B and Figure 8 As is apparent from the combination, each of the tubes 111, 112, 121, 122 is respectively connected to each of the two diverters 21, 22, i.e., for example, is connected thereto in a bonding, force-fitting and / or positively locked manner, so that the tube 111 opens with its first end to the first flow opening 21-1 of the diverter 21 and with its second end to the first flow opening 22-1 of the diverter 22, the tube 121 opens with its first end to the second flow opening 21-2 of the diverter 21 and with its second end to the second flow opening 22-2 of the diverter 22, the tube 112 opens with its first end to the third flow opening 21-3 of the diverter 21 and with its second end to the third flow opening 22-3 of the diverter 22, and the tube 122 opens with its first end to the fourth flow opening 21-4 of the diverter 21 and with its second end to the fourth flow opening 22-4 of the diverter 22. Finally, four parallel fluid flow paths are thus formed such that the fluid flowing into the measuring transducer is divided into four partial flows, or the mass flow entering the measuring transducer is correspondingly divided into four partial mass flows, and the partial flows are brought together again when flowing out of the measuring transducer, or the partial mass flows are recombined into a single outgoing mass flow. Figure 2A , Figure 2B , Figure 3A , Figure 3B , Fig. 7A , Figure 7B and Figure 8 or Figure 5A , Figure 5B , Fig. 6A , Figure 6B , Fig. 7A , Figure 7B and Figure 8It can be clearly seen from the combination that the splitter 21 can be arranged on the inlet side in the flow direction of the fluid FL1 or used as a pipeline branching unit, and the splitter 22 can be correspondingly arranged on the outlet side in the flow direction of the fluid FL1 or used as a pipeline merging unit. According to another embodiment of the present invention, it is further provided that the pipe assembly has exactly four pipes, that is, no other pipes are connected to the splitter 21 and the splitter 22 except for the aforementioned pipes 111, 112, 121, and 122. The aforementioned pipe lengths correspond here to the extended lengths of the corresponding pipes or the lengths of the imaginary center lines, wherein the pipe length of pipe 111 is equal to the pipe length of pipe 121, or the pipe length of pipe 121 is equal to the pipe length of pipe 122. According to another embodiment of the present invention, the pipe length of pipe 111 is also only equal to the pipe length of pipe 121 but is greater than the pipe lengths of both pipes 121 and 122, or the pipe length of pipe 121 is only equal to the pipe length of pipe 122 but is less than the pipe lengths of both pipes 111 and 112. According to another embodiment of the present invention, the corresponding tube length of each of the first tube 111 and the second tube 121 is respectively greater than the corresponding tube length of each of the third tube 112 and the fourth tube 122; this specifically makes the tube length of each of the tubes 111, 121 respectively greater than 101% of the tube length of the tube 112 or 122 and / or respectively less than 105% of its tube length.

[0089] The tube wall of each tube 111, 121, 112, 122 of the tube assembly, respectively, has a predetermined (e.g. also substantially uniform) wall thickness and, as is common in tube assemblies or measuring transducers of the type in question or measuring systems formed therefrom, can, for example, consist of the same material and / or metal (i.e., for example, stainless steel or, respectively, a nickel-based alloy). Furthermore, the tubes 111, 121, 112, 122, respectively, can, for example, be formed as one piece (i.e., for example, produced seamlessly or at least produced with a tube wall made of metal and having a weld seam) and / or can be formed by bending a tubular semi-finished product, for example, so that each tube 111, 121, 112, 122 (also, respectively, as Figure 2A , Figure 2B , Figure 3A and Figure 3B ,or Figure 5A , Figure 5B , Fig. 6A and Figure 6BThe tubes 111 and 121 are substantially V-shaped or have a V-shaped profile, and / or each tube ultimately has a tube shape that lies in a single (bending) plane. According to another embodiment of the present invention, the caliber (i.e., inner diameter) of each tube is not less than 20 mm, for example, also greater than 40 mm, and / or equal to the caliber of each of the other tubes. Since the two tubes 111 and 121 and the two tubes 121 and 122 have the same structure, the caliber of the aforementioned tube 111 is equal to the caliber of the tube 121, and the caliber of the tube 121 is equal to the caliber of the tube 122. According to another embodiment of the present invention, in addition, the caliber of each tube 111, 112, 121, 122 is equal to the caliber of each of the other tubes 111, 112, 121 or 122, and / or each tube 111, 121, 112, 122 also has a tube length to caliber ratio greater than 25 (25:1), but for example also less than 30 (30:1), which is measured as the quotient of the corresponding tube length and the corresponding caliber. According to another embodiment of the present invention, the minimum wall thickness of the tube wall of each tube is not less than 1 mm, for example also greater than 1.5 mm and / or equal to the minimum wall thickness of the tube wall of each of the other tubes. Since the two tubes 111, 121 and the two tubes 121, 122 are respectively identical in structure, the minimum wall thickness of the tube wall of the aforementioned tube 111 is equal to the minimum wall thickness of the tube wall of the tube 121, and the minimum wall thickness of the tube wall of the tube 121 is equal to the minimum wall thickness of the tube wall of the tube 122. According to another embodiment of the present invention, the wall thickness of each tube 111 , 112 , 121 , 122 is also equal to the minimum wall thickness of each other tube 111 , 112 , 121 or 122 .

[0090] In order to connect the pipe assembly or the measuring transducer or the measuring system formed thereby to the aforementioned process pipeline conducting the fluid FL1, the flow divider 21 can have a first connection flange, which is used, for example, during operation to connect the pipe assembly to a pipeline section of the process pipeline supplying the fluid FL1, and the flow divider 22 can have a second connection flange, which is used, for example, to connect the pipe assembly again to a pipeline section of the process pipeline discharging the fluid FL1. On each of the aforementioned connection flanges, for example, a sealing surface for connecting the pipe assembly to the corresponding corresponding pipeline section of the process pipeline in a fluid-tight or leak-free manner can be formed respectively. Each of the two sealing surfaces can respectively: have a minimum diameter defining the nominal diameter of the measuring transducer greater than 100 mm; and / or have a minimum distance from the respective other of the sealing surfaces, which minimum distance defines here the installation length of the pipe assembly or the measuring transducer formed thereby, which is greater than 1000 mm and / or less than 3000 mm.

[0091] According to another embodiment of the present invention, the pipes 111, 121, 112, 122 and the flow dividers 21, 22 are also designed and arranged so that the pipe assembly (also as shown in FIG. Fig. 7A or Figure 7BSchematically shown) has: a first imaginary connecting axis z1, which imaginarily connects the center point of the flow opening 21-1 and the center point of the flow opening 22-1 to each other; a second imaginary connecting axis z2, which imaginarily connects the center point of the flow opening 21-2 and the center point of the flow opening 22-2 to each other; a third imaginary connecting axis z3, which imaginarily connects the center point of the flow opening 21-3 and the center point of the flow opening 22-3 to each other; and a fourth imaginary connecting axis z4, which imaginarily connects the center point of the flow opening 21-4 and the center point of the flow opening 22-4 to each other, so that each of the aforementioned imaginary connecting axes z1, z2, z3, z4 extends parallel to each other of the connecting axes z1, z2, z3 or z4. In addition, the diverters 21, 22 can be designed and arranged to be related to each other, so that each of the connecting axes z1, z2, z3 and z4 has the same length as each of the other connecting axes z1, z2, z3 or z4. According to another embodiment of the present invention, as from Fig. 7A , Figure 7B , Figure 8 , Fig.9A or Fig. 9B It is also easy to see that each tube 111, 112, 121, 122 is shaped so that it has: a first symmetry plane yz-111, yz-121, yz-112 or yz-122, that is, for example, a first symmetry plane corresponding to the corresponding imaginary longitudinal cross-sectional plane; and a second symmetry plane xy-111, xy-121, xy-112 or xy-122 perpendicular thereto, that is, for example, a second symmetry plane corresponding to the corresponding imaginary cross-sectional plane, and which is mirror-symmetrical to the associated first symmetry plane and the associated second symmetry plane, respectively. In addition, the tubes 111, 121, 112, 122 and the flow dividers 21, 22 can be designed and arranged so that the symmetry plane yz-111 extends parallel to the symmetry plane yz-121 and the symmetry plane yz-112 extends parallel to the symmetry plane yz-122 and / or the symmetry plane yz-111 coincides with the symmetry plane yz-112 and the symmetry plane yz-121 coincides with the symmetry plane yz-122. According to another embodiment, the tubes 111, 121, 112, 122 and the flow dividers 21, 22 are also designed and arranged so that the tube assembly has at least one first imaginary symmetry plane yz, which is located between the tubes 111 and 121 and between the tubes 112 and 122, and the tube assembly is mirror-symmetrical about the first imaginary symmetry plane, as shown from Figure 8 and Fig.9A or their combination is also easy to see. Fig. 7A , Figure 7B , Figure 8 , Fig.9A and Fig. 9BIt is also easy to see from the combination that the tube assembly can also be designed so that its first symmetry plane yz is, for example, parallel to each of the aforementioned symmetry planes yz-111, yz-121, yz-112, yz-122 of tubes 111, 121, 112 or 122 and / or is respectively arranged at the same distance from each of the aforementioned symmetry planes yz-111, yz-121, yz-112, yz-122 of tubes 111, 121, 112 or 122; for example, this also makes the two tubes 111, 121 respectively parallel to each other or parallel to the aforementioned symmetry plane yz of the tube assembly, and the two tubes 112, 122 respectively parallel to each other or parallel to the symmetry plane yz of the tube assembly, and / or the two tubes 111, 121 are located in a common first imaginary tube plane, and the tubes 121, 122 are located in a common second imaginary tube plane. Therefore, according to another embodiment of the present invention, the minimum distance between tube 111 and the symmetry plane yz of the tube assembly is equal to the minimum distance between tube 112 and the symmetry plane yz, and / or the minimum distance between tube 121 and the imaginary symmetry plane yz of the tube assembly is equal to the minimum distance between tube 122 and the symmetry plane yz. According to another embodiment of the present invention, it is further provided that, in addition to the aforementioned first symmetry plane yz, the tube assembly has a second symmetry plane xy, which is perpendicular to the first symmetry plane but still intersects each tube imaginarily, and is also mirror-symmetric about the second imaginary symmetry plane xy.

[0092] According to one embodiment of the invention, each tube 111, 121, 112, 122 of the tube assembly is respectively configured to conduct a fluid in its respective inner cavity, i.e., for example, in each case a partial volume of the fluid FL1 to be measured, and at the same time allow vibrations, i.e., for example, respectively undergo a forced mechanical vibration, which for example results in a measurement effect corresponding to at least one measured variable and / or is induced with the aid of an exciter assembly with respect to a respectively associated static rest position; this in particular allows each tube of the tube assembly to vibrate and, at the same time, be flowed through by the fluid starting from its respective first end in the direction of its respective second end. As is common in measuring transducers of the type in question, the aforementioned forced mechanical vibrations may be, at least in proportion, forced bending vibrations of the tube about a respective imaginary vibration axis of the tube assembly, i.e., imaginarily intersecting the respective tube; this in particular also allows the aforementioned (four) imaginary vibration axes to be substantially parallel to each other and / or to the aforementioned imaginary connection axes z1, z2, z3, z4, for example when the tube is in a static rest position.

[0093] According to one embodiment of the invention, the exciter assembly is arranged or configured, for example, to convert the electrical power fed thereto into forced mechanical vibrations, i.e., for example, bending vibrations of a tube of the tube assembly about a corresponding static rest position, while the sensor assembly is, for example, arranged or configured to sense the mechanical vibrations of the tube, in particular the mechanical vibrations and / or bending vibrations of the tube forced by means of the exciter assembly, and to provide a first vibration measurement signal s41, a second vibration measurement signal s42, a third vibration measurement signal s43 and a fourth vibration measurement signal s44, each of which (e.g. the electrical vibration measurement signals s41, s42, s43, s44) at least proportionally represents the vibration movement of one or more tubes 111, 121, 112, 122 of the tube assembly, for example in each case by means of a corresponding variable voltage corresponding to the vibration movement of the tube; this feature In particular, the first vibration measurement signal s41 and the second vibration measurement signal s42 follow the change of the mass flow rate of the material to be measured conducted in the pipe assembly, which is accompanied by the change of the first phase difference (i.e., the change of the difference between the phase angle of the vibration measurement signal s41 and the phase angle of the vibration measurement signal s42), and the third vibration measurement signal s43 and the fourth vibration measurement signal s44 follow the change of the mass flow rate of the material to be measured conducted in the pipe assembly, which is accompanied by the change of the second phase difference (i.e., the change of the difference between the phase angle of the vibration measurement signal s43 and the phase angle of the vibration measurement signal s44), and / or each of the aforementioned vibration measurement signals s41, s42, s43, s44 follows the change of the density of the material to be measured conducted in the pipe assembly, which is accompanied by the change of the corresponding signal frequency of at least one spectral signal component. In order to induce and maintain the forced mechanical vibration of the pipe, the exciter assembly according to another embodiment of the present invention has a first vibration exciter 31 (e.g., electric) and at least one second vibration exciter 32, which is, for example, electric and / or has the same structure as the first vibration exciter 31. As Figure 3A , Figure 3B , Fig. 6A , Figure 6B , Fig. 7A and Figure 7BAs shown or can be easily seen from the combination thereof, for example, the vibration exciter 31 can be mechanically connected to each of the two tubes 111, 121, and the vibration exciter 32 can be mechanically connected to each of the two tubes 112, 122. According to one embodiment of the present invention, each of the two vibration exciters 31, 32 is also arranged or configured to convert the power fed from the electronic measurement and operation system ME into a forced mechanical vibration of the tubes 111, 121 and 112, 122 respectively connected to the corresponding vibration exciters 31 and 32; this in particular enables the vibration exciter 31 to act differently on the two tubes 111, 121, that is, equal and opposite excitation forces can be introduced into the two tubes 111, 121, or only equal and opposite excitation forces can be introduced into the two tubes 112, 122, and the vibration exciter 32 to act differently on the two tubes 112, 122, that is, equal and opposite excitation forces can be introduced into the two tubes 112, 122.

[0094] In order to generate the aforementioned vibration measurement signals s41, s42, s43, s44, a sensor assembly according to another embodiment of the present invention has: a first vibration sensor, which is, for example, electric, for the vibration measurement signal s41; a second vibration sensor, which is, for example, electric and / or has the same structure as the first vibration sensor, for the vibration measurement signal s42; a third vibration sensor, which is, for example, electric and / or has the same structure as the first vibration sensor, for the vibration measurement signal s43; and at least one fourth vibration sensor, which is, for example, electric and / or has the same structure as the third vibration sensor, for the vibration measurement signal s44. The two vibration sensors can be, for example, mechanically connected to each of the two pipes 111, 121, and the two vibration sensors can be, for example, mechanically connected to each of the two pipes 112, 122, for example, so that the two vibration sensors sense the inlet-side vibration movement of the pipe 111, 121, 112 or 122, respectively, and the two vibration sensors sense the outlet-side vibration movement of the pipe 111, 121, 112 or 122, respectively. For example, the vibration sensor may also be positioned so that the distance between the vibration sensor and the diverter 21 is the same as the distance between the vibration sensor and the diverter 22 and / or the distance between the vibration sensor and the diverter 21 is the same as the distance between the vibration sensor and the diverter 22, and / or the two vibration sensors are respectively positioned at the same distance from the aforementioned vibration exciter 31 and / or the two vibration sensors are respectively positioned at the same distance from the aforementioned vibration exciter 32. According to another embodiment of the present invention, each of the aforementioned vibration sensors is also arranged or configured to sense the opposite (possibly equal and opposite) vibration movements of the tubes 111, 121 and convert them into corresponding vibration measurement signals s41, s42 (representing the vibration movements respectively), and each of the aforementioned vibration sensors is also arranged or configured to sense the opposite (possibly equal and opposite) vibration movements of the tubes 112, 122 and convert them into corresponding vibration measurement signals s43, s44 (representing the vibration movements respectively); this specifically enables each of the vibration sensors to sense the vibration movements of the two tubes 111, 121 differently, that is, only convert the opposite vibration movements of the tubes 111, 121 into corresponding vibration measurement signals, and each of the vibration sensors to sense the vibration movements of the two tubes 112, 122 differently, that is, only convert the opposite vibration movements of the tubes 112, 122 into corresponding vibration measurement signals. In order to reduce the number of required connecting lines to the electronic measuring and operating system ME, two vibration sensors can be electrically connected in series so that the two vibration measurement signals s41, s43 are superimposed on each other, and / or two vibration sensors can be electrically connected in series so that the two vibration measurement signals s42, s44 are superimposed on each other.

[0095] In addition to the measuring transducer MW, the measuring system according to the invention also comprises an electronic measuring and operating system ME, which is electrically coupled both to the aforementioned exciter component of the measuring transducer and to the aforementioned sensor component of the measuring transducer. The electronic measuring and operating system ME can be formed, for example, by means of at least one microprocessor and / or by means of at least one digital signal processor and / or can be electrically coupled to both the exciter component 30 and to the sensor component by means of electrical connecting lines in each case. Furthermore, the electronic measuring and operating system ME (also respectively Figure 1 , Figure 2A and Figure 2B or Figure 4 , Figure 5A , Figure 5B ) can be accommodated in a protective electronic device housing 100, which is, for example, explosion-proof or pressure-resistant and / or protects the electronic measurement and operation system ME from splashing water. According to another embodiment of the present invention, Figure 3B or Figure 6BAs shown, the electronic measuring and operating system is configured to at least temporarily generate a first electric driver signal e31 and thus feed power into the exciter assembly so that both tubes 111 and 121, respectively, perform useful vibrations at least proportionally, i.e. forced mechanical vibrations with a first useful frequency, i.e. a vibration frequency predetermined by the driver signal e31. In addition, the electronic measuring and operating system is also configured to at least temporarily generate a second electric driver signal e32, e.g. also simultaneously with the driver signal e31, and thus feed power into the exciter assembly so that both tubes 112 and 122, e.g. also simultaneously with the other two tubes 111, 121, perform useful vibrations at least proportionally in each case, i.e. forced mechanical vibrations with at least a second useful frequency, e.g. deviating from the first useful frequency, i.e. a vibration frequency predetermined by the electric driver signal e32. The aforementioned first useful frequency may, for example, correspond to a first resonant frequency of the tube assembly depending on the density of the fluid FL1 conducted in the tube assembly, i.e., for example, the lowest common resonant frequency of the first tube pair formed by means of tubes 111, 121, and the aforementioned second useful frequency may, for example, correspond to a second resonant frequency of the tube assembly depending on the density of the fluid FL1 conducted in the tube assembly and optionally also deviating from the first resonant frequency, i.e., for example, the lowest common resonant frequency of the second tube pair formed by means of tubes 112, 122. Furthermore, the electronic measuring and operating system may also be arranged or configured to receive and evaluate the aforementioned vibration measurement signals s41, s42, s43, s44, i.e., to generate a mass flow measurement value representing the mass flow rate of the fluid FL1 based on the aforementioned first phase difference thereof and / or based on the aforementioned second phase difference thereof, and / or to generate a density measurement value representing the density of the fluid FL1 based on at least one signal frequency of at least one of the vibration measurement signals s41, s42, s43, s44 (i.e., for example, based on a signal frequency corresponding to the aforementioned first useful frequency of at least one of the vibration measurement signals s41, s42 and / or based on a signal frequency corresponding to the aforementioned second useful frequency of at least one of the vibration measurement signals s43, s44). Alternatively or additionally, the electronic measuring and operating system may also be arranged or configured to generate a viscosity measurement value representing the viscosity of the fluid FL1 based on at least one of the vibration measurement signals s41, s42, s43, s44 and / or at least one of the aforementioned driver signals e31, e32.

[0096] In the measuring transducer according to the invention (or the measuring system formed therefrom), also Fig. 7A and Figure 7BAs shown schematically or easily seen from the combination thereof, each tube 111, 112, 121, 122 of the tube assembly specifically comprises: at least one straight first section 111-1, 121-1, 112-1 or 122-1, which is connected to the diverter 21, for example, in a bonding and / or force fit and / or positive locking manner; an arc-shaped second section 111-2, 121-2, 112-2 or 122-2, which is adjacent to the first section 111-1, 121-1, 112-1 or 122-1; 1, 112-1 or 122-1; a straight third section 111-3, 121-3, 112-3 or 122-3, which is adjacent to the second section 111-2, 121-2, 112-2 or 122-2; an arc-shaped fourth section 111-4, 121-4, 112-4 or 122-4, which is adjacent to the third section 111-3, 121-3, 112-3 or 122-3; a straight fifth section 111-5, 121-5, a circular arc-shaped sixth partial segment 111-6, 121-6, 112-6 or 122-6, which is adjacent to the fifth partial segment 111-5, 121-5, 112-5 or 122-5 and has the same structure as the corresponding second partial segment 111-2, 121-3, 112-3 or 122-3; a circular arc-shaped sixth partial segment 111-6, 121-6, 112-6 or 122-6, which is adjacent to the fifth partial segment 111-5, 121-5, 112-5 or 122-5 and has the same structure as the corresponding second partial segment 111-2, 121-2, 112-2 or 122-2 have the same shape and size; and a straight seventh partial segment 111-7, 121-7, 112-7 or 122-7, adjacent to the sixth partial segment 111-6, 121-6, 112-6 or 122-6 and connected to the diverter 22, for example in a combined and / or force-fitted and / or positively locked manner, and has the same shape and size as the corresponding first partial segment 111-1, 121-1, 112-1 or 122-1.Each of the aforementioned straight sections 111-1, 121-1, 112-1, 122-1, 111-3, 121-3, 112-3, 122-3, 111-5, 121-5, 112-5, 122-5, 111-7, 121-7, 112-7 or 122-7 may also be specifically hollow cylindrical, i.e. in the form of a straight cylinder having a cylindrical through hole extending along its imaginary longitudinal axis, and except for minor local deformations related to production, may also be designed to have substantially the same overall wall thickness or substantially the same overall diameter. Similarly, each of the aforementioned arc-shaped partial sections 111-2, 121-2, 112-2, 122-2, 111-4, 121-4, 112-4, 122-4, 111-6, 121-6, 112-6 or 122-6 may also have an overall substantially identical wall thickness or an overall substantially identical caliber, for example, so that except for a slight local deformation associated with production, each tube has an overall substantially identical wall thickness or an overall substantially identical caliber, and the corresponding enclosed inner cavity has an overall substantially circular flow cross section. In the aforementioned case where the tube assembly has both a symmetry plane yz and a symmetry plane xy perpendicular thereto, according to another embodiment of the present invention, it is further provided that the symmetry plane xy imaginarily intersects each tube in its corresponding fourth partial section 111-4, 121-4, 112-4 or 122-4, such as from. Fig. 7A and Figure 7B According to another embodiment of the present invention, Fig. 9B Shown or from Fig. 7A , Figure 7B , Fig.9A and Fig. 9B, each tube also has a tube arc height h111, h121, h112, h122, which is also measured in the aforementioned symmetry plane xy as the minimum distance between the corresponding fourth section 111-4, 121-4, 112-4 or 122-4 and the associated imaginary connection axis z1, z2, z3 or z4, i.e. connecting its respective first end and second end, and the tube arc height is respectively selected so that each tube 111, 121, 112, 122 has a tube length to tube arc height ratio, which is measured as the quotient of the tube length of the corresponding tube and the corresponding tube arc height, which is greater than 2 (2: 1), for example, greater than 2.5 (2.5:1) and less than 5 (5:1), for example, less than 3 (3:1), and / or each tube 111, 121, 112, 122 has a ratio of diameter to tube arc height, which is measured as the quotient of the diameter of the corresponding tube and the corresponding tube arc height, which is greater than 0.1, for example, also less than 0.2; for example, this also makes the deviation of the ratio of the minimum tube length to the tube arc height and the ratio of the maximum tube length to the tube arc height less than 5% of the ratio of the maximum tube length to the tube arc height, and / or makes the deviation of the ratio of the minimum diameter to the tube arc height and the ratio of the maximum diameter to the tube arc height less than 5% of the ratio of the maximum diameter to the tube arc height.

[0097] Each of the straight partial sections 111-1, 121-1, 112-1, 122-1, 111-3, 121-3, 112-3, 122-3, 111-5, 121-5, 112-5, 122-5, 111-7, 121-7, 112-7 or 122-7 (naturally) has a section length which corresponds to the length of the respective imaginary longitudinal axis of the partial section. Furthermore, each of the arc-shaped partial segments 111-2, 121-2, 112-2, 122-2, 111-4, 121-4, 112-4, 122-4, 111-6, 121-6, 112-6 or 122-6 (naturally) has a segment or arc length corresponding to the extension length of the imaginary arc-shaped center line of the partial segment, an arc radius corresponding to the radius of the imaginary arc-shaped center line, which is, for example, not less than 50 mm, and a center point angle corresponding to the ratio of the segment length to the arc radius. For example, the corresponding segment length and / or the corresponding arc radius of each of the arc-shaped partial sections 111-2, 121-2, 112-2, 122-2, 111-3, 121-3, 112-3, 122-3, 111-4, 121-4, 112-4, 122-4, 111-5, 121-5, 112-5, 122-5, 111-6, 121-6, 112-6 or 122-6 are not less than 150% of the caliber of the corresponding tube 111, 121, 112, 122 respectively. Furthermore, in the measuring transducer according to the present invention, the first partial sections 111-1, 112-1 and the seventh partial sections 112-7, 112-7 of the first tube 111 and the second tube 112 have the same shape and the same size, so that the section length of each of these partial sections 111-1, 112-1, 112-7, 112-7 is equal to the section length of each of the other partial sections 111-1, 112-1, 112-7, 112-7. similarly, the first partial segments 121-1, 122-1 and the seventh partial segments 121-7, 122-7 of the third tube 121 and the fourth tube 122 have the same shape and size, so that the segment length of each of these partial segments 121-1, 122-1, 121-7, 122-7 is respectively equal to the segment length of each of the other partial segments 121-1, 122-1, 121-7, 122-7.

[0098] According to another embodiment of the present invention, the partial sections 111-4, 121-4 of the tubes 111, 121 also have the same shape and the same size, so that the section length, arc radius and center point angle of each of the two partial sections 111-4, 121-4 are respectively equal to the section length, arc radius and center point angle of the corresponding other of the two partial sections 111-4, 121-4, and the partial sections 112-4 and 122-4 have the same shape and the same size, so that the section length, arc radius and center point angle of each of the partial sections 112-4 and 122-4 are respectively equal to the section length, arc radius and center point angle of the corresponding other of the fourth partial sections 112-4 or 122-4 of the tubes 112, 122. According to another embodiment of the present invention, the partial sections 111-4 and 121-4 of the tubes 111 and 121 are respectively larger than the partial sections 112-4 and 122-4, so that the corresponding section length and / or arc radius of each of the partial sections 111-4 and 121-4 is respectively larger than the section length and arc radius of each of the partial sections 112-4 and 122-4; this specifically makes the section length of each of the partial sections 111-4 and 121-4 The segment length is not less than 130% of the segment length of partial segment 112-4 or 122-4 and / or not more than 200% of the segment length of partial segment 112-4 or 122-4, and / or the arc radius of each of partial segments 111-4, 121-4 is not less than 130% of the arc radius of partial segment 112-4 or 122-4 and / or not more than 200% of the arc radius of partial segment 112-4 or 122-4.

[0099] In particular, when the aforementioned symmetry plane yz-111 coincides with the aforementioned symmetry plane yz-112 and the aforementioned symmetry plane yz-121 coincides with the aforementioned symmetry plane yz-122, the corresponding arc radius of each of the (larger) partial segments 111-4, 121-4 may also be respectively greater than the arc radius of each of the (smaller) partial segments 112-4 and 122-4; this specifically makes the arc radius of each of the partial segments 111-4, 121-4 200% of the arc radius of the partial segment 112-4 or 122-4, respectively. Alternatively or additionally, the tube can also advantageously be designed and arranged so that the arc-shaped partial segments 111-4, 121-4, 112-4, 122-4 or the imaginary arc-shaped center lines of the partial segments 111-4, 121-4, 112-4, 122-4 projected on the first symmetry plane yz extend parallel to each other, or the arc-shaped center line partial segments 111-4, 121-4, 112-4, 122-4 projected on the first symmetry plane yz are arc segments of concentric circles.

[0100] For example, in the case where the sensor assembly is formed by means of the aforementioned four vibration sensors, the vibration sensor may be attached to the partial segment 111-3 of the tube 111 at a distance from both the partial segments 111-2 and the partial segments 111-4 and to the partial segment 121-3 of the tube 121 at a distance from both the partial segments 121-2 and the partial segments 121-4, and the vibration sensor may be attached to the partial segment 111-5 of the first tube 111 at a distance from both the partial segments 111-6 and the partial segments 111-4 and to the partial segment 121-6 at a distance from both the partial segments 111-6 and the partial segments 111-6. The vibration sensor may be attached to the partial section 121-5 of the tube 121 at a distance from both the partial section 112-2 and the partial section 112-4 and to the partial section 122-3 of the tube 122 at a distance from both the partial section 122-2 and the partial section 122-4, or the vibration sensor may be attached to the partial section 112-5 of the tube 112 at a distance from both the partial section 112-6 and the partial section 112-4 and to the partial section 112-5 of the tube 112 at a distance from both the partial section 112-6 and the partial section 112-4 and to the partial section 112-5 of the tube 112 at a distance from both the partial section 112-6 and the partial section 112-4. The partial segment 121-6 and the partial segment 122-4 are both attached to the partial segment 122-5 of the tube 122 at a distance; this also means, for example, that the vibration sensor is not arranged between all the tubes 111, 121, 112, 122, but the vibration sensor is only partially positioned between the partial segment 111-3 and the partial segment 121-3, but neither between the partial segment 111-3 and 112-3 nor between the partial segment 121-3 and 122-3, and the vibration sensor is only partially positioned between the partial segment 111-5 and the partial segment 112-5, but neither between the partial segment 111-5 and the partial segment 112-5. The sub-segments 111-5 and 112-5 are not located between the sub-segments 121-5 and 122-5, the vibration sensor is only partially located between the sub-segments 112-3 and the sub-segment 122-3, but neither between the sub-segments 112-3 and 111-3 nor between the sub-segments 122-3 and 121-3, and the vibration sensor is only partially located between the sub-segments 112-5 and the sub-segment 122-5, but neither between the sub-segments 112-5 and 111-5 nor between the sub-segments 122-5 and 121-5, or, for example, also as Fig. 6A and Figure 6B or Fig. 7A and Figure 7BIt is schematically shown that the vibration sensor is partially positioned between the partial section 111-3 and the partial section 112-3 and partially positioned between the partial section 121-3 and the partial section 122-3, and the vibration sensor is partially positioned between the partial section 111-5 and the partial section 112-5 and partially positioned between the partial section 121-5 and the partial section 122-5, and / or the vibration sensor is partially positioned between the partial section 111-3 and the partial section 112-3 and partially positioned between the partial section 121-3 and the partial section 122-3, and the vibration sensor is partially positioned between the partial section 111-5 and the partial section 112-5 and partially positioned between the partial section 121-5 and the partial section 122-5. Furthermore, the vibration sensor may be spaced apart from the subsection 111-4 by the same distance and from the subsection 121-4 by the same distance, and / or the vibration sensor may be spaced apart from the subsection 112-4 by the same distance and from the subsection 122-4 by the same distance. For example, in the case where the exciter assembly is formed by means of the aforementioned two vibration exciters 31, 32, as also described above, Fig. 7A and Figure 7Bor a combination thereof, it can be seen that the vibration exciter 31 can be attached to the partial section 111-4 of the tube 111 at a distance from both the partial section 111-3 and the partial section 111-5 and to the partial section 121-4 of the tube 121-4 at a distance from both the partial section 121-3 and the partial section 121-5, and the vibration exciter 32 can be attached to the partial section 112-4 of the tube 112 at a distance from both the partial section 112-3 and the partial section 112-5 and to the partial section 122-4 of the tube 122 at a distance from both the partial section 122-3 and the partial section 122-5; for example, this also makes the vibration exciter 31 spaced apart from the partial section 111-3 and the partial section 111-5 of the tube 111 by the same distance respectively and spaced apart from the partial section 121-3 and the partial section 121-5 of the tube 121 by the same distance respectively. The vibration exciter 32 is spaced the same distance from the partial sections 112-3 and 112-5 of the tube 112, respectively, and is spaced the same distance from the partial sections 122-3 and 122-5 of the tube 122; this also means, for example, that neither of the vibration exciters 31, 32 is arranged between all tubes 111, 121, 112, 122, but that the vibration exciter 31 is only partially positioned between the partial sections 111-4 and 121-4, but neither between the partial sections 111-4 and 112-4 nor between the partial sections 121-4 and 122-4, and that the vibration exciter 32 is only partially positioned between the partial sections 112-4 and 122-4, but neither between the partial sections 112-4 and 111-4 nor between the partial sections 122-4 and 121-4, or, for example, as in Fig. 6A and Figure 6B or Fig. 7A and Figure 7B It is shown that at least one of the vibration exciters 31 , 32 is positioned partially between the sub-segment 111 - 4 and the sub-segment 112 - 4 and partially between the sub-segment 121 - 4 and the sub-segment 122 - 4 .

[0101] In order to protect the tubes of the tube assembly and other components of the measuring transducer attached thereto (especially the aforementioned vibration exciters 31, 32 or vibration sensors) from harmful environmental influences, to avoid the vibrating tubes from emitting unwanted sounds, or also to collect fluid escaping from a tube assembly that has leaked, according to another embodiment of the present invention, the measuring transducer includes a transducer housing 200, which is also common in measuring transducers of the type discussed or in a measuring system formed therefrom, and which surrounds the tubes 111, 121, 112, 122 of the tube assembly. The transducer housing 200 has at least one cavity 200*, which is also sealed and sealed, for example, and as shown in FIG. Figure 1 , Figure 2A , Figure 2B , Figure 3A and Figure 3B or Figure 4 , Figure 2A , Figure 5B , Fig. 6A and Figure 6B It can also be seen from the combination that each tube 111, 121, 112, 122 of the tube assembly is arranged in the cavity. The transducer housing can, for example, have a maximum compressive strength greater than that of the tube of the tube assembly and / or a compressive strength greater than 50 bar. Figure 1 , Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 4 , Figure 2A , Figure 5B , Fig. 6A and Figure 6B In the exemplary embodiment shown, the transducer housing 200 comprises a support element 200-1 extending from a first end to a second end with a support element length, wherein the support element 200-1 is mechanically connected (e.g., coupled) to a first shunt at its first end and mechanically connected to a second shunt at its second end. The support element 200-1 has at least one hollow space 200*-1, which is surrounded by a wall (e.g., a metal wall) and forms a partial area of ​​the aforementioned cavity 200* of the transducer housing 200, and can be, for example, substantially cylindrical, and can also be at least partially hollow cylindrical or tubular. The wall of the support element 200-1 can, for example, consist of steel (i.e., stainless steel or structural steel, for example), and / or consist of the same material as the wall of the tubes 111, 121, 112, 122. Therein, the support element can be used to absorb mechanical forces and / or moments introduced into the measuring transducer via the connected process pipeline during operation of the measuring system, for example so that no or only a very small part of said forces and / or moments (i.e., negligible for the desired measuring accuracy of the measuring system) is transmitted to the tube assembly arranged in the transducer housing. In addition to the support element, the transducer housing 200 in the exemplary embodiment shown here also has a housing element 200-2, which is mechanically connected (i.e., for example, coupled) to the support element 200-1 of the transducer housing. As shown from Figure 1 , Figure 2A , Figure 3A and Figure 3B It can also be seen from the combination that the housing element 200-2 can be, for example, tubular, so that it has a hollow space 200*-2 (for example, a partially cylindrical hollow space) which is surrounded by a wall and forms a partial area of ​​the aforementioned cavity 200*. Alternatively, as can be seen from Figure 4 , Figure 5A , Fig. 6A and Figure 6BAs can be seen from the combination of the housing element 200-2, for example, it can also be cap-shaped, so that the wall of the housing element and the section of the wall of the supporting element together form or surround the aforementioned hollow space 200*-2. Figure 3A , Figure 3B or Fig. 6A , Figure 6B As can also be seen in FIG. 1 , the transducer housing and the tube assembly are also designed so that each tube 111, 121, 112, 122 of the tube assembly is only partially arranged in the hollow space 200*-1 of the support element 200-1, or each tube 111, 121, 112, 122 is only partially arranged in the hollow space 200*-2 of the housing element 200-2; for example, as shown in FIG. Figure 3A , Figure 3B or Fig. 6A , Figure 6B As can also be seen in FIG. 1 , this makes it possible for each of the partial sections 111-4, 121-4, 112-4, 122-4 of the tube to be arranged exclusively in the hollow space 200*-2 of the housing element 200-2, and / or for each of the partial sections 111-3, 121-3, 112-3, 122-3, 111-5, 121-5, 112-5, 122-5 of the tube to be arranged at least predominantly in the hollow space 200*-2 of the housing element 200-2, and / or for each of the partial sections 111-2, 121-2, 112-2, 122-2, 111-6, 121-6, 112-6, 122-6 of the tube to be arranged at least predominantly in the hollow space 200*-2 of the housing element 200-2. Each is at least primarily arranged outside the hollow space 200*-2 of the housing element 200-2, or conversely, each of the second partial sections 111-2, 121-2, 112-2, 122-2, 111-6, 121-6, 112-6, 122-6 of the tube is at least primarily arranged within the hollow space 200*-1 of the support element 200-1, and / or each of the partial sections 111-3, 121-3, 112-3, 122-3, 111-5, 121-5, 112-5, 122-5 of the tube is at least primarily arranged outside the hollow space 200*-1 of the support element 200-1. In order to allow the tubes 111, 121, 112, 122 to pass laterally through the support element 200-1, according to another embodiment of the invention, its wall has a first opening 200-1a and at least one second opening 200-1b spaced from the opening 200-1a along an imaginary envelope of the wall. Figure 3A , Figure 3B or Fig. 6A , Figure 6BAs can be seen, each of the two openings 200-1a, 200-1b respectively forms a partial area of ​​the aforementioned cavity 200* of the transducer housing 200. Furthermore, each tube 111, 121, 112, 122 of the tube assembly extends through both the opening 200-1a and the opening 200-1b respectively. In order to avoid vibrating tubes coming into contact with each other or with the transducer housing which is detrimental to the measurement, each tube 111, 121, 112, 122 is only at such a distance from the respective other tube and from the transducer housing 200 (in particular from the respective edge of each of the two aforementioned openings 200-1a, 200-1b in the wall of the support element 200-1) that free vibration with a sufficient vibration amplitude for measurement is achieved respectively under all operating conditions. According to one embodiment of the present invention, the minimum distance between each tube 111, 121, 112, 122 of the tube assembly and the transducer housing 200 and / or the minimum distance between each tube 111, 121, 112, 122 and each other is greater than 5 mm. Therefore, the minimum distance between each tube and the edge of the opening 200-1a or the minimum distance between each tube and the edge of the opening 200-1b is also greater than 5 mm, respectively. On the other hand, in order to provide a measuring transducer that is as compact as possible, according to another embodiment, one or more (and possibly each) of the aforementioned minimum distances will be kept less than 10 mm. According to another embodiment of the present invention, it is further provided that, as from Figure 3B and Figure 6B It can also be seen from the combination that, in the opening 200-1a and the opening 200-1b, the corresponding minimum distance between the tube 111 and the tube 112 is respectively smaller than the aforementioned minimum distance between the partial section 111-4 of the tube 111 and the partial section 112-4 of the tube 112, or, in the opening 200-1a and the opening 200-1b, the corresponding minimum distance between the tube 121 and the tube 122 is respectively smaller than the aforementioned minimum distance between the fourth partial section 121-4 of the tube 121 and the fourth partial section 122-4 of the tube 122.

[0102] In order to make the flow profile of the fluid flowing along the flow path formed by the four tubes 111, 121, 112, 122 having only the same structure in pairs formed here uniform, or in order to achieve the following Fig.10 The distribution of the aforementioned partial mass flows to the four tubes 111, 121, 112, 122 shown in the example of the invention (the distribution is as constant as possible over the widest possible Reynolds number range, in particular with Fig.101 and 12. The arrangement of the second partial sections 111-2, 121-2, 112-2 and 122-2 (here on the inlet side) and the sixth partial sections 111-6, 121-6, 112-6 and 122-6 (here on the outlet side) of the circular arc shape are particularly identical in shape and size, so that the segment length, arc radius and center point angle of each of the second partial sections 111-2, 121-2, 112-2 and 122-2 are respectively equal to those of the second partial sections 111-2, 121-2, 112-2 and 122-2. The segment length, arc radius and center point angle of each other in the segments 111-2, 121-2, 112-2 or 122-2, and the segment length, arc radius and center point angle of each of the sixth partial segments 111-6, 121-6, 112-6 and 122-6 are respectively equal to the segment length, arc radius and center point angle of each other in the sixth partial segments 111-6, 121-6, 112-6 or 122-6; this in particular also makes the tube assembly of the measuring transducer according to the present invention have a total of exactly eight structurally identical arc-shaped partial segments 111-2, 121-2, 112-2, 122-2, 111-6, 121-6, 112-6 and 122-6. In particular, for the purpose of simplifying the design of the measuring transducer or reducing production costs, according to another embodiment of the present invention, the corresponding arc radius of each circular arc partial segment 121-4, 122-4 of the tube 121, 122 is equal to the arc radius of each circular arc partial segment 111-2, 112-2, 121-2, 122-2, 111-6, 112-6, 121-6 and 122-6. For example, the arc-shaped partial segments may also be designed so that the segment length of each arc-shaped partial segment 121-4, 122-4 of the tubes 121, 122 is twice the segment length of each partial segment 111-2, 112-2, 121-2, 122-2, 111-6, 112-6, 121-6 and 122-6, and / or the center point angle of each arc-shaped partial segment 121-4, 122-4 of the tubes 121, 122 is twice the center point angle of each partial segment 111-2, 112-2, 121-2, 122-2, 111-6, 112-6, 121-6 and 122-6.

[0103] In order to easily compensate again for the length differences of the tube geometries accompanying the aforementioned (eight) circular arc-shaped partial sections 111-2, 121-2, 112-2, 122-2, 111-6, 121-6, 112-6 and 122-6 (i.e., for example, in a way that conventional flow dividers can be used or in a way that does not require any structural changes compared to conventional flow dividers), according to a further embodiment of the invention, the first partial sections 121-1, 122-1 and the seventh partial sections 121-7, 122-7 of the third tube 121 and the fourth tube 122 in the measuring transducer according to the invention are respectively larger than the first partial sections 112-1, 112-1 and the seventh partial sections 112-7, 112-7 of the first tube 111 and the second tube 112, so that the section length of each partial section 121-1, 122-1, 121-7 and 122-7 is respectively larger than the section length of each partial section 112-1. , 112-1, 112-7 and 112-7; this also makes, for example, the corresponding segment length of each partial segment 121-1, 122-1, 121-7, 122-7 not less than 200% of the segment length of the partial segment 112-1, 112-1, 112-7 or 112-7 and / or not less than 100% of the diameter of the corresponding tube 121 or 122, and / or each partial segment 121-1, 122-1, The respective segment lengths of 121-7, 122-7 do not exceed 400% of the segment length of the partial segments 112-1, 112-1, 112-7 or 112-7 and / or do not exceed 300% of the caliber of the respective tube 121 or 122; this is also the case, for example, in the above-described case, in which the tube length of the tubes 112, 122 (i.e., the tubes having the nominally most limited space available in the plane of symmetry yz) is greater than the tube length of the tubes 111, 121. According to another embodiment of the present invention, it is further provided that the respective segment length of each partial segment 111-1, 111-7, 121-1, 121-7 is not less than 20% and / or not more than 100% of the caliber of the tube 111 or 121. In order to further simplify the design of the measuring transducer, in particular in order to achieve the highest possible measurement sensitivity of the measured variable monitored by means of the measuring transducer (even with the dimensions being as compact as possible), according to another embodiment of the present invention, it is also provided that Fig. 7A and Figure 7B As shown schematically, the tubes 111, 112, 121, 122 are designed and arranged so that the partial sections 111-1, 121-1, 112-1, 122-1 or their longitudinal axes extend parallel to each other, and the partial sections 111-7, 121-7, 112-7, 122-7 or their longitudinal axes extend parallel to each other. Alternatively or additionally, the tubes may also be designed and arranged so that the partial sections 111-3, 121-3, 112-3, 122-3 or their longitudinal axes extend parallel to each other, and as Fig. 7A and Figure 7B As shown schematically, the partial sections 111 - 5 , 121 - 5 , 112 - 5 , 122 - 5 or their longitudinal axes extend parallel to one another.

Claims

1. A measuring transducer for an electronic vibration measuring system for measuring at least one measured variable of a flowing fluid, the measuring transducer comprising: Tube Assemblies A first tube (111) having a bend, A curved second tube (121) having the same structure as the first tube, A third tube (112) having a bend, A fourth tube (122) is provided, wherein the fourth tube has the same structure as the third tube. A first flow splitter (21) is provided, which is used as a pipeline branching unit and / or is located on the inlet side, and has four flow openings, and having a second flow splitter (22), the second flow splitter having the same structure as the first flow splitter and / or serving as a pipeline merging unit and / or being located at the outlet side, the second flow splitter having four flow openings; an exciter assembly for inducing and maintaining mechanical vibration of the tube assembly; as well as a sensor assembly for sensing mechanical vibrations of the tube assembly and for generating vibration measurement signals representative of the vibratory motion of one or more of the first tube, the second tube, the third tube, and the fourth tube, respectively; wherein each of the first tube, the second tube, the third tube and the fourth tube respectively extends from a respective first end of the respective tube to a respective second end of the tube, the tube having in each case a tube length corresponding to the extension length of an imaginary center line of the tube, and each of the first tube, the second tube, the third tube and the fourth tube respectively has a tube wall and an inner cavity surrounded by the wall; and wherein the respective tube length of each of the first tube and the second tube is respectively greater than the tube length of each of the third tube and the fourth tube, Wherein, each of the first tube, the second tube, the third tube and the fourth tube is connected to each of the first flow divider and the second flow divider, respectively, such that: The first tube opens with its first end to the first flow opening of the first flow splitter (21) and with its second end to the first flow opening of the second flow splitter (22), The second tube opens with its first end to the second flow opening of the first flow splitter (21) and with its second end to the second flow opening of the second flow splitter (22), The third tube opens with its first end to the third flow opening of the first flow splitter (21) and with its second end to the third flow opening of the second flow splitter (22), and The fourth tube is connected to the fourth flow opening of the first flow splitter (21) at its first end and to the fourth flow opening of the second flow splitter (22) at its second end; Wherein, each of the first tube, the second tube, the third tube and the fourth tube has at least: a straight first partial section (111-1, 121-1, 112-1, 122-1), said first partial section being connected to said first flow divider, a second arc-shaped subsection (111-2, 121-2, 112-2, 122-2), the second subsection adjoining the first subsection, a cylindrical third subsection (111-3, 121-3, 112-3, 122-3), which adjoins the second subsection, a fourth part section (111-4, 121-4, 112-4, 122-4) in the shape of an arc, the fourth part section being adjacent to the third part section, a straight fifth subsection (111-5, 121-5, 112-5, 122-5), which adjoins the fourth subsection and has the same shape and the same size as the corresponding third subsection, a sixth part segment (111-6, 121-6, 112-6, 122-6) in the shape of an arc, the sixth part segment adjoining the fifth part segment and having the same shape and size as the corresponding second part segment, and a straight seventh partial segment (111-7, 121-7, 112-7, 122-7), which is adjacent to the sixth partial segment and connected to the second flow divider and has the same shape and size as the corresponding first partial segment; wherein each of the first, third, fifth and seventh partial segments has a segment length corresponding to the length of the corresponding imaginary longitudinal axis of the partial segment, and each of the second, fourth and sixth partial segments has a segment length corresponding to the extension length of an imaginary circular arc center line of the partial segment, an arc radius corresponding to the radius of the imaginary circular arc center line, and a center point angle corresponding to the ratio of the segment length to the arc radius; wherein the second partial segments (111-2, 121-2, 112-2, 122-2) have the same shape and size, so that the segment length, arc radius and center point angle of each of the second partial segments (111-2, 121-2, 112-2, 122-2) are respectively equal to the segment length, arc radius and center point angle of each of the other second partial segments (111-2, 121-2, 112-2 or 122-2); wherein the sixth partial segments (111-6, 121-6, 112-6, 122-6) have the same shape and size, so that the segment length, arc radius and center point angle of each of the sixth partial segments (111-6, 121-6, 112-6, 122-6) are respectively equal to the segment length, arc radius and center point angle of each of the other sixth partial segments (111-6, 121-6, 112-6 or 122-6); wherein the fourth partial sections (111-4, 121-4) of the first tube and the second tube are respectively larger than the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube, so that the section length of each of the fourth partial sections (111-4, 121-4) of the first tube and the second tube is respectively larger than the section length of each of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube (112, 122); And wherein the arc radius of each of the fourth partial sections (111-4, 121-4) of the first tube and the second tube is respectively greater than the arc radius of each of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube.

2. The measuring transducer according to claim 1, in, The measured variable of the flowing fluid is mass flow and / or density and / or viscosity.

3. The measuring transducer according to claim 1, in, The first tube is at least partially V-shaped and / or one-piece.

4. The measuring transducer according to claim 1, in, The third tube is at least partially V-shaped and / or single-piece.

5. The measuring transducer according to claim 1, in, The exciter assembly is for inducing and maintaining bending vibration of each of the first tube, the second tube, the third tube, and the fourth tube about a respective rest position.

6. The measuring transducer according to claim 1, in, The sensor assembly is for sensing bending vibrations of each of the first tube, the second tube, the third tube, and the fourth tube about a corresponding rest position.

7. The measuring transducer according to claim 1, in, The tube wall is a metal tube wall.

8. The measuring transducer according to claim 1, in, Each of the first tube, the second tube, the third tube and the fourth tube has at least one first hollow-cylindrical partial section.

9. The measuring transducer according to claim 1, in, The first partial section is connected to the first flow diverter in a joined and / or force-fitting and / or positively locking manner.

10. The measuring transducer according to claim 1, in, Each of the first tube, the second tube, the third tube and the fourth tube has at least one hollow-cylindrical fifth partial section.

11. The measuring transducer according to claim 1, in, Each of the first tube, the second tube, the third tube and the fourth tube has at least one hollow-cylindrical seventh partial section.

12. The measuring transducer according to claim 1, in, The seventh partial section adjoins the sixth partial section and is connected to the second flow diverter in a joined and / or force-fitting and / or positively locking manner.

13. The measuring transducer according to claim 1, in, The respective tube length of each of the first tube and the second tube is respectively greater than 101% of the tube length of the third tube or the fourth tube and / or respectively less than 105% of the tube length of the third tube or the fourth tube; and / or wherein each of the first partial section, the third partial section, the fifth partial section and the seventh partial section is respectively a hollow cylindrical shape; and / or wherein the corresponding segment length of each of the first partial section and the seventh partial section of the third tube and the fourth tube is respectively greater than the segment length of each of the first partial section and the seventh partial section of the first tube and the second tube.

14. The measuring transducer according to claim 1, in, The respective segment length of each of the first partial segment and the seventh partial segment of the third tube and the fourth tube is respectively greater than the segment length of each of the first partial segment and the seventh partial segment of the first tube and the second tube, that is, not less than 200% of the segment length of the first partial segment and the seventh partial segment of the first tube and the second tube, respectively, and / or not more than 400% of the segment length of the first partial segment and the seventh partial segment of the first tube and the second tube, respectively.

15. The measuring transducer according to one of claims 1 to 14, wherein The first tube, the second tube, the third tube and the fourth tube are designed and arranged such that: The first subsections (111-1, 121-1, 112-1, 122-1) or their longitudinal axes extend parallel to one another, and The seventh sub-sections ( 111 - 7 , 121 - 7 , 112 - 7 , 122 - 7 ) or their longitudinal axes extend parallel to one another.

16. The measuring transducer according to one of claims 1 to 14, wherein The first tube, the second tube, the third tube and the fourth tube are designed and arranged such that: The third subsections (111-3, 121-3, 112-3, 122-3) or their longitudinal axes extend parallel to one another, and The fifth subsections ( 111 - 5 , 121 - 5 , 112 - 5 , 122 - 5 ) or their longitudinal axes extend parallel to one another.

17. The measuring transducer according to one of claims 1 to 14, in, The first and seventh partial sections (111-1, 112-1, 112-7, 112-7) of the first and second tubes are of the same shape and size; and The first partial section and the seventh partial section (121-1, 122-1, 121-7, 122-7) of the third tube and the fourth tube have the same shape and size.

18. The measuring transducer according to one of claims 1 to 14, wherein The first partial section and the seventh partial section (121-1, 122-1, 121-7, 122-7) of the third tube and the fourth tube (121, 122) are respectively larger than the first partial section and the seventh partial section (112-1, 112-1, 112-7, 112-7) of the first tube and the second tube (111, 112), so that the section length of each of the first partial section and the seventh partial section (121-1, 122-1, 121-7, 122-7) of the third tube and the fourth tube (121, 122) is respectively larger than the section length of the first partial section and the seventh partial section (112-1, 112-1, 112-7, 112-7) of the first tube and the second tube (111, 112).

19. The measuring transducer according to one of claims 1 to 14, wherein Each of the first tube, the second tube, the third tube, and the fourth tube has a diameter corresponding to a maximum inner diameter of the tube, respectively.

20. The measuring transducer according to claim 19, wherein Each of the first tube, the second tube, the third tube, and the fourth tube has a caliber of not less than 20 mm.

21. The measuring transducer according to claim 19, in, The caliber of each of the first tube, the second tube, the third tube and the fourth tube is respectively equal to the caliber of each of the other of the first tube, the second tube, the third tube or the fourth tube; and / or Wherein, the diameter of each of the first tube, the second tube, the third tube and the fourth tube is respectively greater than 40 mm; and / or wherein the corresponding segment length of each of the first partial segment and the seventh partial segment of the first tube and the second tube is not less than 20% of the caliber of the corresponding first tube or second tube; and / or wherein the corresponding segment length of each of the first partial segment and the seventh partial segment of the third tube and the fourth tube is not less than 100% of the caliber of the corresponding third tube or fourth tube; and / or wherein the respective segment length of each of the first partial segment and the seventh partial segment of the first tube and the second tube does not exceed 100% of the caliber of the corresponding first tube or second tube; and / or wherein the corresponding segment length of each of the first partial segment and the seventh partial segment of the fourth tube and the third tube does not exceed 300% of the caliber of the corresponding third tube or fourth tube; and / or wherein the corresponding segment length of each of the second partial segment, the third partial segment, the fourth partial segment, the fifth partial segment and the sixth partial segment is not less than 150% of the caliber of the corresponding first tube, second tube, third tube or fourth tube; and / or wherein the arc radius of each of the second partial section, the fourth partial section, the fifth partial section and the sixth partial section is not less than 150% of the caliber of the corresponding first tube, second tube, third tube or fourth tube; and / or wherein each of the first tube, the second tube, the third tube and the fourth tube (111, 121, 112, 122) has a tube length to diameter ratio greater than 25 and less than 30, the tube length to diameter ratio being measured as the quotient of the corresponding tube length and the corresponding diameter; and / or Each of the first sub-segment, the third sub-segment, the fifth sub-segment and the seventh sub-segment has a diameter that remains the same over its respective segment length.

22. The measuring transducer according to one of claims 1 to 14, in, The respective arc radii of each of the fourth partial sections of the first tube and the second tube are not less than 130% of the arc radii of the fourth partial sections of the third tube and the fourth tube; and / or wherein the corresponding arc radius of each of the second partial section, the third partial section, the fourth partial section, the fifth partial section and the sixth partial section is not less than 50 mm; and / or wherein the respective arc radius of each of the fourth partial sections of the third tube and the fourth tube is equal to the arc radius of each of the second partial section or the sixth partial section; and / or wherein the corresponding segment length of each of the fourth partial segments of the first tube and the second tube is not less than 130% of the segment length of the fourth partial segments of the third tube and the fourth tube; and / or wherein the center point angle of each of the fourth partial sections (111-4, 121-4, 112-4, 122-4) is respectively equal to the center point angle of each of the other fourth partial sections; and / or Among them, the center point angle of each of the fourth partial segments (111-4, 121-4, 112-4, 122-4) is respectively greater than the center point angle of each of the second partial segments and the sixth partial segments, that is, the center point angle of each of the fourth partial segments (111-4, 121-4, 112-4, 122-4) is respectively twice the center point angle of each of the second partial segments and the sixth partial segments.

23. The measuring transducer according to one of claims 1 to 14, in, The fourth partial sections (111-4, 121-4) of the first tube and the second tube have the same shape and size, so that the section length, arc radius and center point angle of each of the fourth partial sections (111-4, 121-4) of the first tube and the second tube are respectively equal to the section length, arc radius and center point angle of the corresponding other of the fourth partial sections (111-4, 121-4) of the first tube and the second tube; and The fourth partial sections (112-4, 122-4) of the third tube and the fourth tube (112, 122) have the same shape and size, so that the section length, arc radius and center point angle of each of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube are respectively equal to the section length, arc radius and center point angle of the corresponding other one of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube.

24. The measuring transducer according to claim 1, wherein The fourth partial sections (111-4, 121-4) of the first tube and the second tube are respectively larger than the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube, so that the section length of each of the fourth partial sections (111-4, 121-4) of the first tube and the second tube is respectively larger than 130% and / or smaller than 200% of the section length of each of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube (112, 122).

25. The measuring transducer according to one of claims 1 to 14, in, The arc radius of each of the fourth partial sections (111-4, 121-4) of the first tube and the second tube is 200% of the arc radius of each of the fourth partial sections (112-4, 122-4) of the third tube and the fourth tube; and / or Wherein, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the imaginary arc-shaped center lines of the fourth partial sections (111-4, 121-4, 112-4, 122-4) or the fourth partial sections (111-4, 121-4, 112-4, 122-4) projected on the first symmetry plane extend parallel to each other.

26. The measuring transducer according to one of claims 1 to 14, in, Each of the first tube, the second tube, the third tube and the fourth tube has a first symmetry plane and a second symmetry plane perpendicular thereto, and wherein each of the first tube, the second tube, the third tube and the fourth tube is mirror-symmetrical with respect to both the associated first symmetry plane and the associated second symmetry plane; and / or wherein the minimum wall thickness of the tube wall of the first tube and the minimum wall thickness of the tube wall of the second tube are respectively equal to the minimum wall thickness of the tube wall of the third tube and are respectively equal to the minimum wall thickness of the tube wall of the fourth tube; and / or wherein the tube wall of each of the first tube, the second tube, the third tube and the fourth tube is made of the same material; and / or wherein each of the first tube, the second tube, the third tube and the fourth tube is connected to both the first flow divider and the second flow divider in a combined manner; and / or Therein, the tube assembly has exactly four tubes, ie, no other tubes are connected to the first flow divider and the second flow divider except the first tube, the second tube, the third tube and the fourth tube.

27. The measuring transducer according to claim 26, wherein The tube wall of each of the first tube, the second tube, the third tube and the fourth tube consists in each case of stainless steel or a nickel-based alloy.

28. The measuring transducer according to one of claims 1 to 14, wherein The first tube, the second tube, the third tube and the fourth tube are designed and arranged so that the tube assembly has a first symmetry plane located between the first tube and the second tube and between the third tube and the fourth tube, that is, an imaginary reference plane, and the tube assembly is mirror-symmetrical about the imaginary reference plane.

29. The measuring transducer according to claim 28, in, The minimum distance between the first tube and the first plane of symmetry of the tube assembly is equal to the minimum distance between the third tube and the first imaginary plane of symmetry of the tube assembly; and / or wherein the minimum distance between the second tube and the first symmetry plane of the tube assembly is equal to the minimum distance between the fourth tube and the first imaginary symmetry plane of the tube assembly; and / or wherein each of the first tube, the second tube, the third tube and the fourth tube is parallel to the first symmetry plane of the tube assembly; and / or The tube assembly has a second symmetry plane of the tube assembly, which is perpendicular to the first symmetry plane of the tube assembly but imaginarily intersects each of the first tube, the second tube, the third tube and the fourth tube, and is mirror-symmetric about the second symmetry plane of the tube assembly.

30. The measuring transducer according to claim 29, wherein The second symmetry plane imaginarily intersects a respective fourth partial section of the first tube, the second tube, the third tube, and the fourth tube.

31. The measuring transducer according to one of claims 1 to 14, wherein The tube assembly has: a first imaginary connecting axis which imaginarily connects a center point of a first flow opening of the first flow splitter and a center point of a first flow opening of the second flow splitter to each other, a second imaginary connecting axis which imaginarily connects a center point of the second flow opening of the first flow splitter and a center point of the second flow opening of the second flow splitter to each other, a third imaginary connecting axis that imaginarily connects a center point of the third flow opening of the first flow splitter and a center point of the third flow opening of the second flow splitter to each other, and A fourth imaginary connecting axis imaginarily connects the center point of the fourth flow opening of the first splitter and the center point of the fourth flow opening of the second splitter to each other; such that each imaginary connecting axis extends parallel to each other of the connecting axes.

32. The measuring transducer according to claim 31, in, Each of the tubes has a tube arc height, respectively, measured as the maximum distance of the vertex of the respective fourth partial section from the associated imaginary connecting axis, i.e., the imaginary connecting axis is the connecting axis imaginarily connecting the respective first end and the second end of the respective tube, the tube arc height being selected so that each of the tubes has a tube length to tube arc height ratio, respectively, measured as the quotient of the tube length of the respective tube and the respective tube arc height, the tube length to tube arc height ratio being greater than 2 and less than 5, and / or each of the tubes has a caliber to tube arc height ratio, respectively, measured as the quotient of the caliber of the respective tube and the respective tube arc height, the caliber to tube arc height ratio being greater than 0.1 and less than 0.2; and / or wherein the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that each of the first partial sections (111-1, 121-1, 112-1, 122-1) is respectively aligned with an associated imaginary connection axis, that is, the imaginary connection axis is a connection axis that imaginarily connects the corresponding first end and the second end of the corresponding tube, so that the imaginary longitudinal axis of each of the first partial sections (111-1, 121-1, 112-1, 122-1) coincides with the associated imaginary connection axis; and / or Wherein, the first tube, the second tube, the third tube and the fourth tube are designed and arranged so that each of the seventh partial sections (111-7, 121-7, 112-7, 122-7) is respectively aligned with the associated imaginary connection axis, that is, the imaginary connection axis is a connection axis that imaginarily connects the corresponding first end and the second end of the corresponding tube, so that the imaginary longitudinal axis of each of the seventh partial sections (111-7, 121-7, 112-7, 122-7) coincides with the associated imaginary connection axis.

33. The measuring transducer according to claim 32, in, The ratio of the tube length to the tube arc height is greater than 2.5 and less than 3.

34. The measuring transducer according to one of claims 1 to 14, wherein The sensor assembly comprises: a first vibration sensor, which is electric; a second vibration sensor, which is electric and / or has the same structure as the first vibration sensor; a third vibration sensor, which is electric and / or has the same structure as the first vibration sensor; and at least one fourth vibration sensor, which is electric and / or has the same structure as the third vibration sensor.

35. The measuring transducer according to claim 34, in, The first vibration sensor is attached to a third partial section of the first tube at a distance from both the second partial section of the first tube and the fourth partial section of the first tube, and is attached to a third partial section of the second tube at a distance from both the second partial section of the second tube and the fourth partial section of the second tube; wherein the second vibration sensor is attached to the fifth partial section of the first tube at a distance from both the sixth partial section of the first tube and the fourth partial section of the first tube, and is attached to the fifth partial section of the second tube at a distance from both the sixth partial section of the second tube and the fourth partial section of the second tube; wherein the third vibration sensor is attached to a third partial section of the third tube at a distance from both the second partial section of the third tube and the fourth partial section of the third tube, and is attached to a third partial section of the fourth tube at a distance from both the second partial section of the fourth tube and the fourth partial section of the fourth tube; and Wherein, the fourth vibration sensor is attached to the fifth partial section of the third tube at a distance from both the sixth partial section of the third tube and the fourth partial section of the third tube, and is attached to the fifth partial section of the fourth tube at a distance from both the sixth partial section of the fourth tube and the fourth partial section of the fourth tube.

36. The measuring transducer according to one of claims 1 to 14, wherein The exciter assembly has a first vibration exciter, which is electric, and at least one second vibration exciter, which is electric and / or has the same structure as the first vibration exciter.

37. The measuring transducer according to claim 36, in, The first vibration exciter is attached to the fourth partial section of the first tube at a distance from both the third partial section of the first tube and the fifth partial section of the first tube, and is attached to the fourth partial section of the second tube at a distance from both the third partial section of the second tube and the fifth partial section of the second tube; and Wherein, the second vibration exciter is attached to the fourth partial section of the third tube at a distance from both the third partial section of the third tube and the fifth partial section of the third tube, and is attached to the fourth partial section of the fourth tube at a distance from both the third partial section of the fourth tube and the fifth partial section of the fourth tube.

38. The measuring transducer according to one of claims 1 to 14, in, The first flow divider has a first connecting flange for connecting the pipe assembly to a pipeline section of a process pipeline supplying a fluid (FL1); and The second flow divider has a second connecting flange, which is used to reconnect the pipe assembly to a pipeline section of a process pipeline for discharging fluid (FL1).

39. The measuring transducer according to claim 38, wherein Each of the first connection flange and the second connection flange has a sealing surface for fluid-tight or leak-free connection of the pipe assembly to a respective corresponding pipeline section of a process pipeline.

40. The measuring transducer according to claim 39, in, Each sealing surface of the first connecting flange and the second connecting flange, respectively, has a minimum diameter, which is a diameter greater than 100 mm and / or a diameter defining a nominal diameter of the measuring transducer; and / or Therein, the minimum distance between the sealing surfaces of the first connecting flange and the second connecting flange defines an installation length of the pipe assembly or a measuring transducer formed thereby, and the installation length is an installation length greater than 1000 mm and / or less than 3000 mm.

41. The measuring transducer according to one of claims 1 to 14, further comprising: A transducer housing, the transducer housing surrounds the first tube, the second tube, the third tube and the fourth tube and has a compressive strength greater than 50 bar, wherein the transducer housing has at least one cavity, and wherein each of the first tube, the second tube, the third tube and the fourth tube is arranged in the cavity.

42. The measuring transducer according to claim 41, in, The at least one cavity is a completely closed cavity.

43. The measuring transducer according to one of claims 1 to 14, wherein Each of the first tube, the second tube, the third tube and the fourth tube is respectively configured to conduct fluid in its respective inner cavity, ie, fluid flows therethrough starting from its respective first end in the direction of its respective second end while allowing vibration.

44. A vibronic measurement system for measuring and / or monitoring at least one flow parameter that varies with time, and / or for measuring and / or monitoring at least one material parameter that varies with time, the measurement system comprising: - a measuring transducer MW according to one of claims 1 to 43; - and an electronic measuring and operating system ME, which is electrically coupled to both its actuator device (30) and its sensor device (40) by means of electrical connecting lines and is formed by means of at least one microprocessor and / or by means of at least one digital signal processor.

45. The vibronic measurement system of claim 44, wherein: The at least one time-varying flow parameter is a mass flow, a volume flow and / or a flow velocity.

46. ​​The vibronic measurement system of claim 44, wherein: The at least one material parameter that varies over time is the density and / or viscosity of the flowing fluid.

47. The vibronic measurement system of claim 44, wherein: The flowing fluid is a gas, a liquid or a dispersion.

48. The vibronic measurement system according to one of claims 44 to 47, in, The electronic measuring and operating system is configured to generate an excitation signal (e31, e32) to supply and / or control the measuring transducer; and / or Therein, the electronic measuring and operating system is configured to receive and process vibration signals (s41, s42, s43, s44) generated by means of the measuring transducer MW, i.e., mass flow measurement values ​​representing the mass flow rate m of the fluid, and / or material parameter values ​​representing at least one material parameter.

49. The vibronic measurement system of claim 48, wherein: The material parameter value is a density measurement representing the density of the fluid and / or a viscosity measurement representing the viscosity of the fluid.

50. Use of a measuring transducer according to one of claims 1 to 43 or a measuring system according to one of claims 44 to 49 for measuring and / or monitoring a fluid flowing in a pipeline.

51. Use of a measuring transducer or a measuring system according to claim 50, wherein: The fluid flowing in the pipeline is a liquid flowing at a mass flow rate of more than 800 t / h.

52. Use of a measuring transducer or a measuring system according to claim 50, wherein: The pipeline is a pipeline with a nominal diameter greater than 100 mm.

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