Measuring device and system for producing measuring devices

Abstract

The invention relates to a measuring device (100, 200, 300) which can be produced cost-effectively in measuring device variants designed for different requirements, the device comprising: a measuring tube (1a, 1b); a sensor (3) for recording, by measurement, at least one measured variable of a medium; and a housing support (5); wherein the measuring tube (1a) comprises a holder (17) which has a mounting surface (19) on the side thereof facing away from the interior (11) of the measuring tube (1a). The holder (17), a main body (29) of a sensor module (27) of the sensor (3) and a base (23) of the housing support (5) are arranged one on top of the other so as to save space and are mechanically connected to one another in such a way that the main body (29) is arranged between the holder (17) and the base (23) of the housing support (5).

Description

[0001] Measuring instrument and system for the manufacture of measuring instruments

[0002] The invention relates to a measuring instrument for measuring at least one measurand of a medium, comprising a measuring tube, a sensor for metrological detection of the measurand(s) of the medium located in or flowing through the measuring tube and a housing support, as well as a system for manufacturing such measuring instruments.

[0003] Measuring instruments, such as flow meters, pressure gauges or level gauges, are used in a variety of different applications, such as in the chemical industry, the food industry, as well as in water treatment plants, e.g. in sewage treatment plants, to measure various types of quantities.

[0004] Measuring instruments typically comprise a sensor with a measuring device for the metrological acquisition of the measured quantity(s) and electronics connected to the measuring device, such as measuring electronics that supply the measuring device with energy and / or receive, digitize, process, evaluate and / or determine and provide measured values ​​of the measured quantity(s) based on the measured signals.

[0005] German patent DE 10 2016 124 358 A1 describes measuring devices, such as vortex flowmeters, which comprise a measuring tube with a holder for a sensor. The holder is arranged on the outside of a wall of the measuring tube and is designed, for example, as a connection fitting. One embodiment provides that the sensor is designed and mounted on the holder in such a way that it closes a through-opening extending through the holder and the wall of the measuring tube, such that a component of the sensor projects into the interior of the measuring tube and / or is in contact with the medium located in the measuring tube.

[0006] In this design, the sensor is connected to the bracket, for example, by a material-bonded connection such as welding or soldering. However, with this design, the sensor cannot be easily replaced if necessary. Alternatively, the sensor can be detachably connected to the bracket by several screw bolts that pass through an outer edge of the sensor. This offers the advantage that the sensor can be replaced if needed.

[0007] Furthermore, the measuring devices described in DE 10 2016 124 358 A1 comprise a housing with electronics arranged therein, which is mounted on a neck-shaped housing support that surrounds at least a portion of the sensor externally and is detachably connected to the support by several screw bolts extending outside the sensor. In this respect, the support comprises, for example, four threaded holes arranged in an inner square into which four screw bolts for securing the sensor are screwed, and four threaded holes arranged in an outer square surrounding the inner square into which four screw bolts for securing the housing support are screwed.

[0008] This means, however, that additional space is required on the bracket for mounting the housing support. The higher the nominal pressure inside the measuring tube, which the screw connections between the sensor and the bracket, and possibly also the screw connections between the housing support and the bracket, must withstand, the larger the diameter of the screw bolts used to create the screw connections and, consequently, the larger the bracket itself. As a result, different versions of the bracket, sensor, and housing support are required to manufacture measuring instruments for different nominal pressure ranges. These different versions increase the inventory and manufacturing costs associated with producing measuring instruments for different nominal pressure ranges.

[0009] Furthermore, the measuring tubes must have a minimum length sufficient to accommodate the space required for the mounting, which depends on the nominal pressure range. This minimum length can be achieved by measuring tubes of appropriate length, equipped with flanges at both ends. When the measuring tube is installed in a piping system, each flange is connected to a corresponding flange on a segment of the piping system. While the length of flanged measuring tubes is freely selectable within broad limits, the length of measuring tubes designed as intermediate flange tubes, which can be clamped between two existing pipe flanges at the installation site, is limited to a length specified by relevant standards in many countries, such as 65 mm.However, this length is regularly too short to accommodate a bracket on which the sensor and the housing support can each be connected by screw connections that can withstand high nominal pressures, such as nominal pressures of up to 400 bar.

[0010] It is an object of the invention to provide a measuring instrument that can preferably be manufactured cost-effectively, in which less space is required on the measuring tube for the mounting of the sensor and housing support, whereby the space requirement also allows the measuring instrument to be designed as an intermediate flange device, especially in the case of a mounting designed for high nominal pressures.

[0011] The invention comprises a measuring instrument for measuring at least one quantity of a medium, comprising a measuring tube, a sensor for metrologically detecting the quantity(ies) of the medium located in or flowing through the measuring tube, and a housing support, wherein: the measuring tube comprises a holder arranged externally on a wall of the measuring tube, which has a mounting surface on its side facing away from the interior of the measuring tube; the sensor comprises a sensor module with a base body; the housing support comprises a first end on which a housing is arranged, mountable, or mounted, and has a base at a second end opposite the first end; the holder, the base body, and the base of the housing support are arranged one another and mechanically connected to each other in such a way that the base body is arranged between the holder and the base of the housing support.wherein the base body has a first end face complementary to the mounting surface of the bracket on its end face facing the mounting surface of the bracket.

[0012] The measuring device offers the advantage that no additional space is required on the measuring tube or bracket for mounting the housing support. This, in turn, means that the minimum length of the measuring tube, determined by the space required for the bracket, remains so short that the measuring tube can still be designed as an intermediate flange tube, even if the mechanical connection is sufficiently robust to withstand the high pressures present inside the measuring tube during operation, such as pressures corresponding to a nominal pressure of up to 400 bar.

[0013] Another advantage is that the design of the measuring device, in particular the mechanical connection between the base, the main body and the holder running over the base body, enables more cost-effective development and production of variants of the measuring device designed for different requirements, such as different nominal pressure ranges and / or installation situations at the place of use.

[0014] A first further development consists in the fact that: the base of the housing support and the main body of the sensor module have external dimensions corresponding to the external dimensions of the holder; the holder has a length in the direction parallel to the longitudinal axis of the adjacent section of the measuring tube that is less than or equal to a length specified for wafer tubes or a length of 65 mm specified for wafer tubes; and / or the holder, the main body and at least also the base of the housing support have a width in the direction perpendicular to the longitudinal axis of the section of the measuring tube adjacent to the holder that is less than or equal to 32 mm, less than or equal to 38 mm or less than or equal to 40 mm; and / or that is less than or equal to a maximum width specified for a given minimum nominal diameter of measuring tubes, enabling the design of the measuring device as a wafer device.

[0015] One initial variant provides that the measuring tube includes a passage opening extending through the holder and the wall of the measuring tube, and the sensor module includes a component adjacent to and / or projecting into the interior of the measuring tube.

[0016] Embodiments of the first variant consist in the sensor module comprising a module area that is at least partially arranged in the passage opening and / or covers and / or closes the passage opening, and / or the passage opening has an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm² 2 up to 16 cm 2 exhibits.

[0017] A second variant consists of the holder having a through-opening that exposes a portion of the wall of the measuring tube, and the sensor module comprising a component adjacent to the through-opening and / or at least partially located in the through-opening and / or on the portion of the wall.

[0018] Further embodiments consist in the base body and at least the base of the housing support being designed as integral components of a single component, or the base having a mounting surface on its side facing away from the first end of the housing support and the base body having a second end face complementary to the mounting surface of the base on its end face facing the base.

[0019] A second further development provides that the mechanical connection between the base, the main body and the holder is designed as a detachable mechanical connection or comprises a detachable mechanical connection in which the base of the housing support is mechanically detachable or screwed to the holder by at least two or four fastening means, each passing through a bore provided in the main body.

[0020] Embodiments of the second further development provide that the fastening means comprise: a) screws which are screwed through bores provided in the base of the housing support and bores provided in the main body into threaded bores of the bracket, or b) threaded studs formed as part of the bracket, screwed into the bracket and / or metallurgically bonded to the bracket, which extend through bores provided in the base of the housing support and bores provided in the main body, and nuts screwed onto their ends. Further developments consist in that the mechanical connection between the base, the main body and the bracket comprises: a) a permanent partial connection connecting the main body to the bracket, in particular...a) includes an adhesive bond, a joining, a material-bonded partial connection, a weld or a solder joint, and / or b) includes a partial connection connecting the base body to the base, which is designed as a permanent partial connection, in particular as an adhesive bond, a joining, a material-bonded partial connection, a weld or a solder joint, or which is designed as a detachable partial connection, in particular as a screw connection.

[0021] Further embodiments provide that: the mounting surface of the bracket is at least partially designed as a sealing surface which, in conjunction with a corresponding sealing surface of the first end face of the base body, with or without the insertion of a process seal, creates an intimate, in particular fluid-tight and / or leak-free, connection between the base body and the bracket, and / or the mounting surface of the base of the housing support is at least partially designed as a sealing surface which, in conjunction with a corresponding sealing surface of the second end face of the base body, with or without the insertion of a seal, creates an intimate, in particular fluid-tight and / or leak-free, connection between the base and the base body.

[0022] A further development consists in the fact that: the support, in a direction parallel to the longitudinal axis of the adjacent section of the measuring tube, has a length that is less than or equal to a length specified for wafer-type tubes or a length of 65 mm specified for wafer-type tubes, and the measuring tube is designed as a wafer-type tube that can be clamped between two pipe flanges provided at the place of use, and / or has a length that corresponds to a length specified for wafer-type tubes or is 65 mm.

[0023] Further developments stipulate that: the measuring device is designed as a device usable at high nominal pressures of up to 160 bar, up to 250 bar, up to 320 bar or even up to 400 bar; the measuring tube is designed to withstand pressures prevailing inside, corresponding to a nominal pressure of up to 160 bar, up to 250 bar, up to 320 bar or up to 400 bar; and / or the mechanical connection between the base, the main body and the holder is designed to withstand pressures acting on the sensor module inside the measuring tube, corresponding to a nominal pressure of up to 160 bar, up to 250 bar, up to 320 bar or up to 400 bar.

[0024] Further embodiments consist of the following: the measuring device being designed as a flow meter, as a vortex flow meter, as an ultrasonic flow meter, as a thermal flow meter, as a magnetic-inductive flow meter, as a pressure meter, as a differential pressure meter, as a temperature meter, as a density meter, as a viscosity meter, as a vibronic density and / or viscosity meter, as a pH meter or as a measuring device for measuring at least one other quantity of the medium; the wall being made of a metallic material, stainless steel, a metal alloy, an alloy comprising titanium, tantalum and / or zirconium or a plastic; the mounting being designed as a pedestal or as a nozzle, as an integral part of the measuring tube or as a body connected to the wall in a material-bonded or otherwise manner.is designed as a holder manufactured at least partially by an additive manufacturing process on a lateral surface of the wall, and / or is made of a nickel-based alloy or of a material that is at least chemically identical to the wall of the measuring tube, the housing support is made of a metallic material, stainless steel, aluminum, plastic or polycarbonate, is designed as a neck-shaped support, and / or has a length of 40 mm to 250 mm, the housing is made of a metallic material, stainless steel, aluminum, plastic or polycarbonate, and / or is designed as an electronics housing for accommodating electronics or electronics connected to the sensor through the housing support,The sensor module is designed to measure at least one quantity of the medium in the measuring tube and / or to generate and / or provide a measurement signal corresponding to the respective quantity; the sensor module comprises at least one measuring device, a temperature measuring element, a pH measuring device, a pressure or differential pressure measuring device, or a flow measuring device; and / or comprises at least one transducer, an electrochemical transducer, an electromechanical transducer, an ultrasonic transducer, a piezoelectric transducer, a capacitive transducer, or a magnetic-inductive transducer; and / or comprises at least one component, a coil, and / or a magnet of a measuring device.

[0025] Furthermore, the invention comprises a system for manufacturing measuring instrument variants designed for different requirements of measuring instruments according to the invention, wherein the system comprises two or more different measuring tubes, two or more sensor modules and two or more housing supports, wherein each measuring tube comprises a holder arranged externally on a wall of the measuring tube, which has a mounting surface on its side facing away from the interior of the measuring tube that is identical in construction for all measuring tubes of the system, each housing support comprises a first end on which a housing is arranged, mountable or mounted, and has a base at a second end opposite the first end, and each sensor module comprises a base body which has on an end face a first end face complementary to the identical mounting surfaces of the holders of the measuring tubes of the system.

[0026] Further developments of the system consist of the following: the measuring tubes comprising at least two measuring tubes made of different materials, having different dimensions, different nominal diameters, different tube lengths, different mounting flanges, and / or designed for different nominal pressures; the measuring tubes comprising at least one measuring tube designed as an intermediate flange tube that can be clamped between two pipe flanges, at least one measuring tube with a mounting flange at each of its opposite ends, and / or at least one measuring tube that can be connected to segments of a pipeline present at the place of use by joining or welding.at least one or each measuring tube has a through-opening extending through the holder and the wall of the measuring tube, or a through-opening extending through the holder and the wall of the measuring tube with an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm², 2 up to 16 cm 2includes housing supports comprising two or more identical housing supports, comprising two or more different housing supports, and / or comprising at least two housing supports made of different materials, having different dimensions, and / or having different lengths, and / or comprising housing supports on which different housings are arranged, mountable, or mounted, the bases and the main bodies having external dimensions corresponding to the external dimensions of the measuring tube supports, the supports having a length in the direction parallel to the longitudinal axis of the adjacent section of the measuring tube that is less than or equal to a length specified for wafer-type tubes or a length of 65 mm specified for wafer-type tubes, and the supports, the main bodies, and at least also the bases of the housing supports having a width that is less than or equal to 32 mm.is less than or equal to 38 mm or less than or equal to 40 mm, and / or is less than or equal to a maximum width specified for a minimum nominal diameter for the measuring tubes of the system, enabling the design of the measuring devices as an intermediate flange device; the system comprises sensor modules and housing supports in which the base body and at least the base of the housing support are designed as integral components of a single component; the system comprises sensor modules and housing stubs combinable therewith in which the base has a mounting surface on its side facing away from the first end of the housing support and the base body has a second end face complementary to the mounting surface of the base; and / or the system comprises sensor modules for at least two different types of measuring devices, which are designed to metrologically acquire measured quantities to be measured with measuring devices of the respective type.

[0027] Furthermore, the invention comprises a use of a system according to the invention in a method for manufacturing measuring instrument variants designed for different requirements of measuring instruments according to the invention, wherein in the manufacture of each measuring instrument one of the measuring tubes contained in the system is selected, one of the sensor modules and one of the housing supports of the system is arranged on the holder of the measuring tube, and the holder of the measuring tube, the base body of the sensor module and the base of the housing support are mechanically connected to each other.

[0028] The invention and its advantages will now be explained in more detail with reference to the figures in the drawing, which illustrate several exemplary embodiments. Identical elements in the figures are designated with the same reference numerals.

[0029] Fig. 1 shows: a measuring instrument with a measuring tube designed as an intermediate flange tube;

[0030] Fig. 2 shows: a view of a holder of the measuring tube of the measuring instrument of Fig. 1;

[0031] Fig. 3 shows: a view of a sensor module;

[0032] Fig. 4 shows: a view of a sensor module arranged on the bracket of Fig. 2 and a section of a housing support;

[0033] Fig. 5 shows: a measuring instrument with a measuring tube comprising flanges; and

[0034] Fig. 6 shows: another measuring device.

[0035] Fig. 1 shows an embodiment of a measuring device 100 for measuring at least one quantity of a medium. The measuring device 100 comprises a measuring tube 1a, a sensor 3 for the metrological detection of the quantity(ies) of the medium located in or flowing through the measuring tube 1a, and a housing support 5 on which a housing 7 is arranged, mountable, or mounted. The medium is a fluid medium, such as a fluid substance flowing through a pipeline at the location of use of the measuring device 100, such as a gas, natural gas, or biogas, a compressed gas, steam, or a liquid, such as petroleum or water. Depending on the location of use, the pipeline is, for example,designed as a component of a plant for the execution of a process engineering process, a water or heat supply network, a turbine cycle, a natural gas or biogas plant, a gas supply network, a loading station for petrochemical substances or the like.

[0036] The at least one measured quantity includes, for example, one or more measured quantities of the medium located in or flowing through the measuring tube 1a, which may also change over time, such as a flow velocity, a flow rate, such as a volume flow rate or a mass flow rate, a temperature, a pressure, a pH value, a density and / or a viscosity.

[0037] In this respect, the measuring device 100 is designed, for example, as a flow meter, as a vortex flow meter, as an ultrasonic flow meter, as a thermal flow meter, as a magnetic-inductive flow meter, as a pressure meter, as a differential pressure meter, as a temperature meter, as a density meter, as a viscosity meter, as a vibronic density and / or viscosity meter, as a pH meter and / or as a measuring device for measuring at least one other quantity of the medium.

[0038] The measuring tube 1a comprises a tube body with an interior 11 enclosed on the outside by a wall 9 of the measuring tube 1a. The tube body is, for example, designed entirely or at least partially as a hollow cylindrical tube. Fig. 1 shows an embodiment in which the measuring tube 1a is designed as a straight tube with a hollow cylindrical wall 9 extending over its entire length. Alternatively or additionally, the tube body can also be curved, at least partially, and / or have a cross-sectional area that deviates from a circular shape and / or varies along the measuring tube 1a, at least partially. The measuring tube 1a, or at least the wall 9 of the tube body, consists, for example, of a metallic material, such as stainless steel, or a metal alloy, such as an alloy comprising titanium, tantalum, and / or zirconium.Alternatively, the measuring tube 1 a or at least the wall 9 of the tube body can also be made of a different material, such as a plastic.

[0039] The interior 11 of the measuring tube 1a is designed as an interior space 11 through which the medium can be filled and / or through which the medium can flow. In this respect, the measuring tube 1a is designed, for example, to be inserted into the course of a pipeline provided at the installation site, forming a continuous flow path. The continuous flow path comprises, for example, path segments running through the pipeline, which are connected via a path segment extending from an inlet end of the measuring tube 1a to an outlet end of the measuring tube 1a. Fig. 1 shows an exploded view of an embodiment in which a first segment 13 of the pipeline can be connected to a second segment 15 of the pipeline via the measuring tube 1a.

[0040] Furthermore, the measuring tube 1a comprises a bracket 17 arranged externally on the wall 9, such as a bracket designed as a pedestal or as a connecting piece, which has a mounting surface 19 on its side facing away from the interior 11 of the measuring tube 1a. A view of an exemplary embodiment of the bracket 17 having the mounting surface 19 of the measuring tube 1a of the measuring instrument 100 shown in Fig. 1 is shown in Fig. 2.

[0041] The holder 17 is, for example, designed as an integral part of the measuring tube 1a or as a body connected to the wall 9 by a material bond or other means. One embodiment consists in the holder 17 being connected to the wall 9 by welding. Another embodiment consists in the holder 17 being manufactured, at least partially, by an additive manufacturing process, such as a free-space process or a powder bed process, on a surface of the wall 9.

[0042] The holder 17 consists, for example, of a nickel-based alloy or of a material that is at least chemically identical to the wall 9 of the measuring tube 1a. Alternatively, the measuring tube 1a and / or the holder 17 can also be made of a different material.

[0043] The housing support 5 comprises a first end on which the housing 7 is arranged, mountable, or mounted. Additionally, the housing support 5 comprises a base 23 at its second end, opposite the first end.

[0044] The housing 7 is made, for example, of a metallic material, such as stainless steel or aluminum, or of a plastic, such as polycarbonate. The housing 7 is, for example, an electronics housing for accommodating electronics 21, such as electronics 21 connected to the sensor 3 through the housing support 5.

[0045] The housing support 5 is made, for example, of a metallic material such as stainless steel or aluminum, or of a plastic such as polycarbonate. Regardless of its material, the housing support 5 has a freely definable length within a wide range, such as a length from 40 mm to 250 mm. The distance between the measuring tube 1a and the electronics 21, determined by the length of the housing support 5, offers the advantage of thermal decoupling, which allows the measuring device 100 to be used, in particular, in applications where the medium in the measuring tube 1a can have temperatures outside the operating temperature range of the electronics 21.

[0046] The electronics 21 of the measuring device 100 are configured, for example, to supply the sensor 3 with energy, to receive, digitize, process, and / or evaluate measurement signals provided by the sensor 3, and / or to determine measured values ​​of the measured quantity(ies) based on the measurement signals, and / or to make them available to at least one device that can be connected wirelessly or via a cable to the electronics 21 for display, further processing, and / or other purposes. The at least one device includes, for example, a user interface designed as part of the measuring device 100 or as an external device, such as a display and / or an operating device, and / or an external device, such as an operating unit, a process control system, or a programmable logic controller. With regard to the connection of the electronics 21 to the sensor 3, the housing support 5 is designed, for example, as a neck-shaped support, through the, for example,through the channel-shaped interior, the sensor 3 can be connected to or is connected to the electronics 21 arranged in the housing 7.

[0047] The sensor 3 comprises a sensor module 27 with a base body 29. A view of an embodiment of the sensor module 27 is shown in Fig. 3.

[0048] The bracket 17, the base body 29, and the base 23 of the housing support 5 are arranged one above the other and mechanically connected to each other such that the base body 29 is positioned between the bracket 17 and the base 23 of the housing support 5. For this purpose, the base body 29 has a first end face 31 on its end face facing the mounting surface 19 of the bracket 17, which is complementary to the mounting surface 19 of the bracket 17.

[0049] Fig. 1 shows an embodiment in which the holder 17, the base body 29, and the housing support 5 are separate components arranged one on top of the other in a stack. In this embodiment, the base 23 has a mounting surface 25 on its side facing away from the first end of the housing support 5, and the base body 29 has a second end face 33 on its end face facing the base 23, which is complementary to the mounting surface 25 of the base 23.

[0050] Fig. 4 shows, as a further embodiment, a view of a sensor module 27 arranged on the holder 17 shown in Fig. 2 and a section of the housing support 5, in which the base body 29 and at least the base 23 of the housing support 5 are designed as integral components of a single component.

[0051] The measuring device 100 described above with reference to Figures 1 to 4 has the aforementioned advantages. Individual components of the measuring device 100 can have optional configurations that can be used individually and / or in combination with one another.

[0052] One embodiment shown in the figures consists in the base 23 and the base body 29 of the sensor module 27 having external dimensions corresponding to the external dimensions of the holder 17 and the external dimensions of the mounting surface 19 of the holder 1, respectively.

[0053] Regardless of its specific design, the sensor module 27 of the sensor 3 is configured to measure at least one quantity of the medium in the measuring tube 1a and / or to generate and / or provide a measurement signal corresponding to the respective quantity. For this purpose, the sensor module 27 may, depending on the type of quantity(ies), comprise at least one measuring device, such as a temperature measuring element, a pH measuring device, a pressure or differential pressure measuring device, or a flow measuring device, and / or at least one transducer, such as an electrochemical transducer, an electromechanical transducer, an ultrasonic transducer, a piezoelectric transducer, a capacitive transducer, or a magnetic-inductive transducer, or at least one component of a measuring device, such as a coil and / or a magnet.

[0054] Depending on the type of measured quantity(s) and / or sensor module 27, the measuring tube 1a includes, for example, a through-opening 37 extending through the holder 17 and the wall 9 of the measuring tube 1a, which opens into the interior 11 of the measuring tube 1a. In this respect, the holder 17 is designed, for example, as a nozzle that surrounds a section of the through-opening 37 extending through the holder 17 on all sides.

[0055] In this embodiment, the sensor module 27 comprises, for example, a component 35 adjacent to and / or projecting into the opening 37 and / or the interior 11 of the measuring tube 1a. Alternatively or additionally, the sensor module 27 comprises, for example, a module section 38 that is arranged at least partially in the opening 37 and / or covers and / or closes the opening 37. Depending on the configuration, this module section 38 is, for example, designed such that it encompasses or is connected to the component 35. In these embodiments, the opening 37 has, for example, an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm². 2 up to 16 cm 2Figures 1 and 3 show an embodiment in which the component 35 of the sensor module 27 of the measuring device 100, designed here as a vortex flowmeter, which projects into the interior 11 of the measuring tube 1a, comprises a paddle that can be deflected by pressure fluctuations acting upon it, and whose deflections are converted into a measurement signal corresponding to the pressure fluctuations by means of an electromechanical transducer 39 of the sensor module 27. In this embodiment, the pressure fluctuations acting on the component 35 are caused, for example, by a baffle S inserted upstream of the component 35 in the flow path of the medium, behind which a Karman vortex street forms, in which counter-rotating vortices succeed one another at a frequency dependent on the flow velocity or the volumetric flow rate of the medium.With appropriate design, dimensioning, and arrangement of component 35 and the baffle body S, this leads to periodic pressure fluctuations acting on component 35, the frequency of which can be measured using the electromechanical transducer 39. Depending on the length LM of the measuring tube 1a, the baffle body S is arranged, for example, either within the measuring tube 1a or in a pipe segment upstream of the measuring tube 1a, such as the first segment 13 shown in Fig. 1.

[0056] Fig. 5 shows, as a further embodiment, a measuring device 200 constructed analogously to the measuring device 100 shown in Fig. 1, here designed as a differential pressure flowmeter. In this measuring device 200, an orifice 41 is inserted into the measuring tube 1 b, and the sensor module 27 comprises a pressure measuring device 45 connected to two differential pressure lines 43 opening into the measuring tube 1 b on both sides of the orifice 41 for the metrological detection of a pressure difference between the two pressures supplied to the pressure measuring device 45 via the differential pressure lines 43, which depends on the flow velocity of the medium flowing through the measuring tube 1 b.

[0057] Fig. 6 shows, as a further embodiment, a measuring device 300 constructed analogously to the measuring device 100 shown in Fig. 1, in which the holder 17 has a through-opening 47 that exposes a partial area of ​​the wall 9 of the measuring tube 1a. In this embodiment, the sensor module 27 comprises, for example, a section adjacent to and / or at least partially within the through-opening 47.

[0058] Component 49 is arranged in the through-opening 47, such as a component 49 arranged on the partial area of ​​the wall 9. Depending on the configuration of the measuring device 300, component 49 comprises, for example, a transducer, such as an ultrasonic transducer of the measuring device 300, which in this case is configured, for example, as an ultrasonic flowmeter, and which is configured, for example, to send and / or receive signals through the partial area of ​​the wall 9. Alternatively, component 49 can also comprise at least one component of a measuring device, such as a coil and / or a magnet of a magnetic-inductive measuring device of the measuring device 300, which in this case is configured, for example, as a magnetic-inductive flowmeter. Regardless of the configuration of component 49 in this respect, the through-opening 47, which exposes the partial area of ​​the wall 9, has, for example, an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm². 2 up to 16 cm 2 on.

[0059] Regardless of the previously described configurations, the mechanical connection between the base 23, the main body 29, and the holder 17 can also be designed in different ways. One embodiment consists of a detachable mechanical connection. Figures 1 to 4 and 6 show an embodiment in which the base 23 of the housing support 5 is mechanically detachably connected to the holder 17 by at least two fastening elements 53, each passing through a bore 51 provided in the main body 29, e.g., by screws. In the embodiment shown in Figures 1 and 6, in which the main body 29 and the housing support 5 encompassing the base 23 are designed as separate components, the main body 29 of the sensor module 27 is thereby clamped between the base 23 of the housing support 5 and the holder 17 of the measuring tube 1a. In the embodiment shown in Figures 1 and 6, the main body 29 of the sensor module 27 is clamped between the base 23 of the housing support 5 and the holder 17 of the measuring tube 1a.In the embodiment shown in Figure 4, the component comprising the base 23 and the base body 29 is thereby connected to the holder 17.

[0060] Suitable fasteners 53 include, for example, screws which are screwed through bores 55 provided in the base 23 of the housing support 5 and bores 51 provided in the base body 29 into threaded bores 57 of the bracket 17. Figures 1 to 4 and Figure 6 show an embodiment in which the bracket 17 has four threaded bores 57, arranged, for example, in a rectangle or a square, into which one of the fasteners 53, designed as screws, is screwed through the corresponding bores 51, 55 in the base 23 and in the base body 29. The axial course of the fasteners 53, designed as screws and arranged parallel to the section plane shown in Figures 1 and 6, is shown with dashed lines in Figures 1 and 6.

[0061] Alternatively, a complementary connection type can be chosen in which the bracket has outwardly projecting threaded studs instead of the threaded bores 57 shown in Fig. 2. These studs pass through the bores 51 in the base body 29 and the bores 55 in the base 23 of the housing spigot 5. In this case, the fastening means include, for example, threaded studs formed as part of the bracket, screwed into the bracket and / or bonded to the bracket, and nuts screwed onto their ends.

[0062] Both embodiments offer the advantage that the housing support 5 and / or the sensor module 27, as well as the measuring tube 1a if necessary, can be replaced.

[0063] Alternatively or additionally, the mounting surface 19 of the holder 17 is, for example, at least partially designed as a sealing surface which, in conjunction with a corresponding sealing surface of the base body 29, with or without the interposition of a process seal 59, creates an intimate, and in particular fluid-tight or leak-free, connection between the base body 29 and the holder 17. In this respect, the first end face 31 of the base body 29, which is complementary to the mounting surface 19 of the holder 17, is, for example, at least partially designed as a sealing surface corresponding to the sealing surface of the holder 17. If the base body 29 is arranged on the holder 17 with the interposition of the process seal 59, the process seal 59 is, for example, an O-ring, a flat gasket, or a molded gasket. Alternatively or additionally, the process seal 59 consists, for example, of an elastomer or a thermoplastic, such as...Polytetrafluoroethylene (PTFE), or another sealing material.

[0064] Optionally, the mounting surface 25 of the base 23, as shown in Figures 1 and 6, is also at least partially designed as a sealing surface, which, in conjunction with a corresponding sealing surface of the base body 29, with or without the insertion of a seal 61, creates a close, and in particular fluid-tight or leak-free, connection between the base 23 and the base body 29. In this respect, the second end face 33 of the base body 29, which is complementary to the mounting surface 25 of the base 23, is at least partially designed as a sealing surface corresponding to the sealing surface of the base 23. Here, too, the optional seal 61 is designed as an O-ring, a flat gasket, or a molded gasket, and / or is designed such that it consists of an elastomer, a thermoplastic such as polytetrafluoroethylene (PTFE), or another sealing material.

[0065] Alternatively or in addition to the detachable connection between the base 23, the main body 29 and the holder 17 described above with reference to Figures 1 to 4 and 6, the mechanical connection between the base 23, the main body 29 and the holder 17 can include at least one permanent partial connection 63, 65. In this case, the measuring instrument 200 comprises, for example, a permanent partial connection 63 connecting the main body 29 to the holder 17, such as an adhesive bond, a joining, a metallurgical partial connection, a weld or a solder joint, and / or a permanent partial connection 65 connecting the main body 29 to the base 23, such as an adhesive bond, a joining, a metallurgical partial connection, a weld or a solder joint.

[0066] Fig. 5 shows an embodiment in which the base body 29 is connected to the holder 17 by the permanent partial connection 63 and the base body 29 is connected to the plinth 23 by the permanent partial connection 65. In Fig. 5, the mechanical connection between the plinth 23, the base body 29 and the holder 17 is formed, for example, by these two permanent partial connections 63 and 65. Alternatively, the mechanical connection can also comprise a combination of a detachable connection between the base 23, the base body 29 and the holder 17, such as one of the screw connections previously described with reference to Figs. 1 to 4 and Fig. 6, and at least one non-detachable partial connection 63, 65, such as the non-detachable partial connection 63 between the holder 17 and the base body 29 shown in Fig. 5 and / or the non-detachable partial connection 65 between the base body 29 and the base 23 shown in Fig. 5.Another embodiment consists in the mechanical connection between the base 23, the base body 29 and the holder 17 comprising the previously described permanent partial connection 63, by which the base body 29 is connected to the holder 17, and a detachable partial connection 66, such as a screw connection, shown in dashed lines in Fig. 5, by which the base 23 is connected to the base body 29.

[0067] All previously described configurations offer the advantage that the base 23 is connected to the bracket 17 via or through the base body 29, thus eliminating the need for additional space on the measuring tube 1a, 1b or the bracket 17 for mounting the housing support 5. This allows the dimensions of the bracket 17, and consequently also the dimensions of the measuring tube 1a, 1b, especially its length LM, to be correspondingly small.

[0068] The dimensions of the bracket 17 are such that, in the direction parallel to the longitudinal axis of the adjacent section of the measuring tube 1a, 1b, the bracket 17 has a length LH that is less than or equal to a length specified for wafer-type tubes, such as a length of 65 mm. This offers the advantage that the measuring device 100, 300 can also be designed as a wafer-type device. In this embodiment shown in Figures 1 and 6, the measuring tube 1a is designed as a wafer-type tube that can be clamped between two pipe flanges 67 provided at the installation site, such as the pipe flange 67 of the first segment 13 and the second segment 15 of the pipeline shown in Figure 1. In this case, the measuring tube 1a has a length specified for intermediate flange tubes, such as a length LM of 65 mm.

[0069] As shown in Fig. 1, the measuring tube 1a, designed as an intermediate flange tube, is preferably designed as a flangeless tube. Alternatively or additionally, the measuring tube 1a has, for example, a sealing surface 69 at each of its opposite ends in the direction parallel to its longitudinal axis. This sealing surface, in conjunction with a corresponding sealing surface 71 of one of the two pipe flanges 67, with or without the insertion of a seal 73, creates an intimate, and in particular fluid-tight or leak-free, connection between the measuring tube 1a clamped between the pipe flanges 67 and the respective segment 13, 15 of the pipeline.

[0070] The clamping of the measuring tube 1a, designed as an intermediate flange tube, is achieved, for example, by mechanically connecting the pipe flanges 67 to each other, e.g. by screwing them together.

[0071] In this respect, the external dimensions of the bracket 17 and the sensor module 27, in particular the base body 29, and, where applicable, also the external dimensions of the base 23, are dimensioned such that the bolts connecting the pipe flanges 67 can pass outside the stack formed by the bracket 17, the base body 29, and the base 23. This results in upper limits for the external dimensions of the stack, which are greater the larger the nominal diameter of the measuring tube 1a.

[0072] Accordingly, the bracket 17, the base body 29, and, if applicable, the base 23, in conjunction with measuring tubes 1a of different nominal diameters, can have different external dimensions. Alternatively, it is specified, for example, that the measuring tube 1a has a nominal diameter greater than or equal to a specified minimum nominal diameter. In this case, the bracket 17, the base body 29, and at least also the base 23 of the housing support 5 have, for example, a width BH in the direction perpendicular to the longitudinal axis of the section of the measuring tube 1a adjacent to the bracket 17, which is less than or equal to a maximum width determined for the specified minimum nominal diameter and enabling the design of the measuring device 100, 300 as an intermediate flange device.This maximum width is dimensioned such that, for measuring tubes 1a designed as intermediate flange tubes, whose nominal diameters are greater than or equal to this minimum nominal diameter, it is ensured that these measuring tubes 1a can be clamped by the bolts connecting the pipe flanges 67 of the first and second segments 13, 15 of the pipeline in such a way that the bolts pass outside the stack formed by the support 17, the base body 29, and the plinth 23. For example, if a minimum nominal diameter of 10 mm is specified, the maximum width is 38 mm. Alternatively, for a minimum nominal diameter of less than 10 mm, a smaller maximum width, such as a maximum width of 32 mm, can be specified, or for a minimum nominal diameter of more than 10 mm, a larger maximum width, such as a maximum width of 40 mm, can be specified.

[0073] In the embodiments shown in Figures 1 to 6, the holder 17, the base body 29, and the plinth 23 each have a rectangular base with a length LH of less than or equal to 65 mm and a width BH of less than or equal to the maximum width specified for the given minimum nominal size, such as the maximum width of 32 mm, 38 mm, or 40 mm mentioned above. Alternatively, the holder 17, the base body 29, and / or the plinth 23 can also have a different basic shape, such as an elliptical or circular shape. Even with these basic shapes, the holder 17, the base body 29, and / or the plinth 23 each have, for example, a length LH of less than or equal to 65 mm and / or a width BH that is less than or equal to the maximum width.

[0074] The design of the measuring device 100, 300 as an intermediate flange device is also possible, in particular, if the measuring device 100, 300 is designed for use at high nominal pressures, such as nominal pressures in a nominal pressure range of up to 160 bar, up to 250 bar, up to 320 bar, or even up to 400 bar. Regardless of whether the measuring tube 1a, 1b is designed as an intermediate flange tube or not, the design of the measuring device 100, 200, 300 for use at correspondingly high nominal pressures is achieved, for example, by ensuring that the measuring tube 1a, 1b is designed to withstand the pressures prevailing in the interior 11, corresponding to the nominal pressure range. This is achieved, for example, by selecting an appropriate material for the tube body and / or by dimensioning the wall thickness of the wall 9 accordingly.In measuring instruments 100, where the sensor module 27 is also exposed, at least partially, to the pressure prevailing in the interior 11 of the measuring tube 1a, 1b, the mechanical connection between the base 23, the main body 29, and the holder 17 is additionally designed to withstand pressures corresponding to the nominal pressure range acting on the sensor module 27 within the interior 11 of the measuring tube 1a, 1b. Such pressure exposure of the sensor module 27 occurs, for example, in measuring instruments 100 whose measuring tube 1a has the previously described through-opening 37 extending through the holder 17 and the wall 9. The required pressure resistance of the connection is achieved, for example, by a suitable choice of material and a corresponding dimensioning of the previously described fastening means 53, such as...the previously described screws or threaded studs, and / or by a correspondingly stable design of the permanent partial connection 63 between the bracket 17 and the base body 29. Optionally, the connection can also be designed for high nominal pressures, such as nominal pressures of up to 160 bar, up to 250 bar, up to 320 bar or even up to 400 bar, if the measuring device 100, 200, 300 and / or the measuring tube 1a, 1b is not designed for this high nominal pressure range and / or the pressure prevailing in the interior 11 of the measuring tube 1a, 1b does not act on the sensor module 27.

[0075] The modular design of the measuring instruments 100, 200, 300 described above with reference to Figs. 1 to 6, in which the holder 17, the base body 29 and the base 23 of the housing support 5 are arranged one on top of the other and the base 23 is connected to the holder 17 in a space-saving manner via or through the base body 29, is not only advantageous when the measuring instrument 100, 300 is designed as an intermediate flange device, but can also be used when the measuring tube 1 b can be mounted in another way.

[0076] Fig. 5 shows an embodiment in which the measuring tube 1 b comprises a mounting flange 75 at each of its opposite ends, which can be connected to a complementary connection flange of a segment of a pipeline present at the place of use.

[0077] Another embodiment consists in the measuring tube being designed as a tube that can be connected to the segments of a pipeline present at the installation site by means of joints such as welds. The previously described detachable mechanical connections between the bracket 17 and the base body 29 offer the advantage that the sensor module 27 and / or the housing support 5 can be replaced as needed without having to remove the measuring tube. Furthermore, measuring instruments 100, 200, 300 according to the invention offer the advantage that measuring instrument variants designed for different requirements can be manufactured more cost-effectively. In this respect, the invention comprises a system for manufacturing measuring instruments designed for different requirements, such as...Different nominal pressure ranges and / or different installation situations, designed measuring instrument vanants of measuring instruments 100, 200, 300 designed in the manner described above. This system comprises two or more different measuring tubes 1a, 1b, two or more sensor modules 27 and two or more housing supports 5. The measuring tubes 1a, 1b, the sensor modules 27 and / or the housing supports 5 are designed, for example, in the manner described above with reference to Figures 1 to 6.

[0078] The various measuring tubes 1a, 1b include, for example, at least one measuring tube 1a designed as an intermediate flange tube that can be clamped between two pipe flanges 67, and / or at least one measuring tube 1b that can be mounted in another way, such as at least one measuring tube 1b that includes a mounting flange 75 at each of its opposite ends, and / or at least one measuring tube that can be connected to segments of a pipeline present at the place of use by means of joining, such as welding.

[0079] The measuring tubes 1a of the system, designed as intermediate flange tubes, include, for example, measuring tubes 1a made of different materials, having different nominal diameters, and / or designed for different nominal pressures. Similarly, the measuring tubes 1b of the system, which can be mounted in other ways, include, for example, measuring tubes 1b made of different materials, having different dimensions, such as different nominal diameters and / or different lengths LM, having different mounting flanges 75, and / or designed for different nominal pressures.

[0080] Optionally, at least one or each measuring tube 1a, 1b of the system is designed, for example, such that it has a through-opening 37 extending through the holder 17 and the wall 9 of the measuring tube 1a, such as a through-opening 37 with an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm². 2 up to 16 cm 2, comprises. Regardless of the type and number of the different measuring tubes 1a, 1b, each measuring tube 1a, 1b of the system has a holder 17 arranged on the outside of a wall 9 of the measuring tube 1a, 1b, the side of which facing away from the interior 11 of the measuring tube 1a, 1b has a mounting surface 19 that is identical in construction for all measuring tubes 1a, 1b of the system.

[0081] Each housing support 5 of the system is designed in the manner described above such that a housing 7 is arranged, mountable or mounted at the first end of each housing support 5, and each housing support 5 has the base 23 at its second end opposite the first end.

[0082] The housing supports 5 of the system comprise, for example, two or more identical housing supports 5 and / or two or more different housing supports 5. The different housing supports 5 include, for example, housing supports 5 made of different materials and / or having different dimensions, such as different lengths, and / or housing supports 5 on which different housings 7 are arranged, mountable, or mounted.

[0083] Each sensor module 27 of the system is designed in the manner described above such that its base body 29 has a first end face 31 that is complementary to the mounting surface 19 of the holder 17 of each measuring tube 1a, 1b of the system.

[0084] The housing supports 5 comprise, for example, at least one housing support 5 whose base 23 has, on its side facing away from the first end, the mounting surface 25 described above, which is identical in construction for all these housing supports 5 of the system. In this case, the sensor modules 27 of the system comprise at least one sensor module 27 whose base body 29 has a second end face 33 complementary to the mounting surface 25 of the base 23 of each of these housing support(s) 5 of the system. Alternatively or additionally, the system comprises, for example, at least one embodiment of the sensor module 27 and the housing support 5 in which the base body 29 and at least the base 23 of the housing support 5 are designed as integral components of a single component. The system is preferably used in a method for manufacturing measuring instrument vanes designed for different requirements of measuring instruments 100, 200, 300 designed in the manner described above.In the manufacture of each measuring device 100, 200, 300, the following procedure is followed: one of the measuring tubes 1a, 1b contained in the system is selected. Subsequently, one of the sensor modules 27 and one of the housing supports 5 of the system are arranged on the holder 17 of the measuring tube 1a, 1b. The holder 17, the base body 29, and the base 23 of the housing support 5 are then mechanically connected to one another such that the base body 29 is positioned between the holder 17 and the base 23 of the housing support 5. This mechanical connection is created, for example, in one of the ways previously described with reference to Figures 1 to 6.

[0085] The system offers the advantage that each measuring tube 1a, 1b can be freely combined with the housing supports 5 and the sensor modules 27 of the system. The identical mounting surfaces 19 of the supports 17 for all measuring tubes 1a, 1b offer the advantage that the variety of parts required to meet different requirements for the measuring tube 1a, 1b does not extend to the sensor modules 27 and the housing supports 5. This eliminates the effort associated with developing sensor modules 27 and housing supports 5 adapted to different measuring tubes 1a, 1b, and allows for the more cost-effective production of larger quantities of identical sensor modules 27 and / or housing supports 5.

[0086] Furthermore, the use of identical sensor modules 27 offers the advantage that this reduces the complexity of manufacturing measuring device variants designed for different requirements, as well as the logistics and warehousing required for this purpose.

[0087] Optionally, the system can be extended to enable the production of variants of two or more different types of measuring instruments 100, 200, 300, designed for different requirements and constructed in the manner described above in conjunction with Figures 1 to 6. In this case, the sensor modules 27 for each type of measuring instrument comprise at least one sensor module 27 compatible with the measuring tubes 1a, 1b of the system, which is configured to metrologically detect the measured quantity(ies) to be measured by measuring instruments 100, 200, 300 of the respective type. Compatibility is ensured, for example, by ensuring that each compatible sensor module 27 is adapted to the design of the measuring tubes 1a, 1b with regard to its dimensions and / or function, such as, for example,whose passage openings 37 extend through the wall 9 and bracket 17 or whose passage openings 47 are provided in the bracket 17 and release the partial area of ​​the wall 9, is coordinated.

[0088] The basic body 29 of each compatible sensor module 27 has a first end face 31 complementary to the identical mounting surfaces 19 of the holders 17 of the measuring tubes 1b, 1b of the system, and, if applicable, also a second end face 33 complementary to the identical mounting surfaces 25 of the bases 23 of the housing supports 5 of the system.

[0089] Regardless of the specific design, the system is designed, for example, such that the bases 23 of the housing supports 5, as well as the base bodies 29 of the sensor modules 27 of the system, each have external dimensions corresponding to the external dimensions of the holder 17 of the measuring tubes 1a, 1b of the system.

[0090] Alternatively or additionally, the supports 17 preferably have a length LH in a direction parallel to the longitudinal axis of the adjacent section of the respective measuring tube 1a, 1b, which is less than or equal to a length specified for wafer-type tubes or a length of 65 mm specified for wafer-type tubes. Furthermore, the supports 17, the base bodies 29, and at least also the bases 23 of the housing supports 5 of the system preferably have a width BH in a direction perpendicular to their length LH, which is less than or equal to the maximum width previously described in connection with the measuring tubes 1a designed as wafer-type tubes for a specified minimum nominal diameter, such as a minimum nominal diameter of 10 mm, such as the aforementioned maximum width of 32 mm, 38 mm, or 40 mm.

[0091] These dimensions offer the advantage of a very high degree of flexibility regarding the design of the different measuring tubes 1a, 1b. Reference list: 00 Measuring instrument 38 Module area 00 Measuring instrument 39 Transducer 00 Measuring instrument 41 Orifice a, 1b Measuring tube 43 Differential pressure line

[0092] Sensor 45 Pressure measuring device

[0093] Housing support 47 Through opening

[0094] Housing 49 Component

[0095] Wall 51 Bores in the base body 1 Interior 53 Fasteners 3 First segment 55 Bores in the base 5 Second segment 57 Threaded holes 7 Bracket 59 Process seal 9 Mounting surface 61 Seal 1 Electronics 63 Permanent partial connection 3 Base 65 Permanent partial connection 5 Mounting surface 66 Detachable partial connection 7 Sensor module 67 Pipe flange 9 Base body 69 Sealing surface 1 First end face 71 Sealing surface 3 Second end face 73 Seal 5 Component 75 Mounting flange 7 Through opening

Claims

Patent claims 1. Measuring instrument (100, 200, 300) for measuring at least one quantity of a medium, comprising a measuring tube (1a, 1b), a sensor (3) for metrologically detecting the quantity(ies) of the medium located in or flowing through the measuring tube (1a, 1b), and a housing support (5), wherein: the measuring tube (1a, 1b) comprises a holder (17) arranged externally on a wall (9) of the measuring tube (1a, 1b), which is located on the interior (11) of the measuring tube. (1a, 1b) has a mounting surface (19) on the side facing away from the mounting surface (19), the sensor (3) comprises a sensor module (27) with a base body (23), the housing support (5) comprises a first end on which a housing (7) is arranged, mountable or mounted, and has a base (23) at a second end opposite the first end, the holder (17), the base body (29) and the base (23) of the housing support (5) are arranged on top of each other and are mechanically connected to each other in such a way that the base body (29) is arranged between the holder (17) and the base (23) of the housing support (5), wherein the base body (29) has a first end face (31) complementary to the mounting surface (19) of the holder (17) on its end face facing the mounting surface (19) of the holder (17).

2. Measuring device (100, 200, 300) according to claim 1, wherein: the base (23) of the housing support (5) and the base body (29) of the sensor module (27) have external dimensions corresponding to the external dimensions of the holder (17), the holder (17) being parallel to the longitudinal axis of the adjacent The section of the measuring tube (1a, 1b) has a length (LH) in the direction extending from the mounting point that is less than or equal to a length specified for intermediate flange tubes or a length of 65 mm specified for intermediate flange tubes, and / or the holder (17), the base body (29) and at least also the base (23) of the housing support (5) have a width (BH) in the direction extending perpendicular to the longitudinal axis of the section of the measuring tube (1a, 1b) adjacent to the holder (17) that is less than or equal to 32 mm, less than or equal to 38 mm or less than or equal to 40 mm, and / or that is less than or equal to a length specified for a minimum nominal diameter of the The maximum width of the measuring tube (1a, 1b) is determined, enabling the design of the measuring device (100, 300) as an intermediate flange device.

3. Measuring instrument (100, 200, 300) according to claims 1 to 2, wherein the measuring tube (1a) comprises a passage opening (37) extending through the holder (17) and the wall (9) of the measuring tube (1a), and the sensor module (27) comprises a component (35) adjacent to and / or projecting into the passage opening (37) and / or the interior (11) of the measuring tube (1a).

4. Measuring device (100, 200, 300) according to claim 3, wherein the sensor module (27) comprises a module area (38) arranged at least partially in the passage opening (37) and / or covering and / or closing the passage opening (37), and / or the passage opening (37) has an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm² 2 up to 16 cm 2 exhibits.

5. Measuring instrument (100, 200, 300) according to claims 1 to 2, wherein the holder (17) has a passage opening (47) which exposes a partial area of ​​the wall (9) of the measuring tube (1a), and the sensor module (27) comprises a component (49) adjacent to the passage opening (47) and / or at least partially located in the passage opening (47) and / or on the partial area of ​​the wall (9).

6. Measuring instrument (100, 200, 300) according to claims 1 to 5, wherein: the base body (29) and at least the base (23) of the housing support (5) are designed as integral components of a single component, or the base (23) has a mounting surface (25) on its side facing away from the first end of the housing support (5) and the base body (29) has a second end surface (33) complementary to the mounting surface (25) of the base (23) on its end face facing the base (23).

7. Measuring device (100, 200, 300) according to claims 1 to 6, wherein the mechanical Connection between the base (23), the main body (29) and the holder (17) is designed as a detachable mechanical connection or comprises a detachable mechanical connection in which the base (23) of the housing support (5) is mechanically detachably connected or screwed to the holder (17) by at least two or four fastening means (53) passing through a bore (51) provided in the base body (29).

8. Measuring instrument (100, 200, 300) according to claim 7, wherein the fastening means (53) comprise: a) screws which are screwed through bores (55) provided in the base (23) of the housing support (5) and bores (51) provided in the base body (29) into threaded bores (57) of the holder (17), or b) threaded studs formed as part of the holder, screwed into the holder and / or materially connected to the holder, which extend through the bores (55) provided in the base (23) of the housing support (5) and bores (51) provided in the base body (29) and nuts screwed onto their ends.

9. Measuring instrument (100, 200, 300) according to claims 1 to 8, wherein the mechanical connection between the base (23), the base body (29) and the holder (17) comprises: a) a permanent partial connection (63) connecting the base body (29) to the holder (17), in particular an adhesive bond, a joining, a material-bonded partial connection, a weld or a solder joint, and / or b) a partial connection connecting the base body (29) to the base (23), which is designed as a permanent partial connection (65), in particular as an adhesive bond, a joining, a material-bonded partial connection, a weld or a solder joint, or which is designed as a detachable partial connection (66), in particular as a screw connection.

10. Measuring instrument (100, 200, 300) according to claims 1 to 9, wherein: the mounting surface (19) of the holder (17) is at least partially designed as a sealing surface which, in conjunction with a corresponding sealing surface of the first end face (31) of the base body (29), with or without the insertion of a process seal (59), creates an intimate, in particular fluid-tight and / or leak-free, connection between the base body (29) and the holder (17), and / or the mounting surface (25) of the base (23) of the housing support (5 ... corresponding sealing surface of the second end face (33) of the base body (29) with or without the insertion of a seal (61) creates an intimate, in particular fluid-tight and / or leak-free, connection between the base (23) and the base body (29).

11. Measuring device (100, 200, 300) according to claims 1 to 10, wherein: the holder (17) has a length (LH) in a direction parallel to the longitudinal axis of the adjacent section of the measuring tube (1a, 1b) which is less than or equal to a length specified for wafer tubes or a length specified for wafer tubes of 65 mm, and the measuring tube (1a) is designed as a wafer tube that can be clamped between two pipe flanges (67) provided at the place of use, and / or has a length (LM) which corresponds to a length specified for wafer tubes or is 65 mm.

12. Measuring instrument (100, 200, 300) according to claims 1 to 11, wherein: the measuring instrument (100, 200, 300) is designed as a device usable at nominal pressures of up to 160 bar, up to 250 bar, up to 320 bar or up to 400 bar, the measuring tube (1a, 1b) is designed to withstand pressures prevailing in the interior (11) corresponding to a nominal pressure range of up to 160 bar, up to 250 bar, up to 320 bar or even up to 400 bar, and / or the mechanical connection between the base (23), the main body (29) and the holder (17) is designed to withstand pressures prevailing in the interior (11) of the measuring tube (1a) acting on the sensor module (27) corresponding to a nominal pressure of up to 160 bar, up to 250 bar, up to to withstand pressures of 320 bar or up to 400 bar.

13. Measuring instrument (100, 200, 300) according to claims 1 to 12, wherein: the measuring instrument (100, 200, 300) is configured as a flow meter, as a vortex flow meter, as an ultrasonic flow meter, as a thermal flow meter, as a magnetic-inductive flow meter, as a pressure meter, as a differential pressure meter, as a temperature meter, as a density meter, as a viscosity meter, as a vibronic density and / or viscosity meter, as a pH meter or as a measuring instrument for measuring at least one other quantity of the medium, the wall (9) is made of a metallic material, stainless steel, a metal alloy, an alloy comprising titanium, tantalum and / or zirconium or a plastic, the support (17) is designed as a pedestal or as a nozzle, is designed as an integral part of the measuring tube (1 a, 1 b) or as a body connected to the wall (9) by a material bond or in another way, is designed as a support (17) manufactured at least partially by an additive manufacturing process on a surface of the wall (9), and / or is made of a nickel-based alloy or of a material that is at least chemically identical to the wall (9) of the measuring tube (1 a, 1 b), the housing support (5) is made of a metallic material, stainless steel, aluminum, plastic or polycarbonate, is designed as a neck-shaped support, and / or has a length of 40 mm to 250 mm, the housing (7) is made of a metallic material,stainless steel, aluminium, plastic or polycarbonate, and / or is designed as an electronics housing for receiving electronics (21) or electronics (21) connected to the sensor (3) through the housing support (5), the sensor module (27) is designed to measure at least one quantity of the medium located in the measuring tube (1 a, 1 b) and / or to generate and / or provide a measurement signal corresponding to the respective quantity, the sensor module (27) comprises at least one measuring device, a temperature measuring element, a pH measuring device, a pressure or differential pressure measuring device or a flow measuring device, and / or comprises at least one transducer, an electrochemical transducer, an electromechanical transducer, an ultrasonic transducer, a piezoelectric transducer, a capacitive transducer or a magnetic-inductive transducer, and / or at least one component,a coil and / or a magnet of a measuring device.

14. System for manufacturing measuring instrument variants (100, 200, 300) designed for different requirements according to claims 1 to 13, wherein the system comprises two or more different measuring tubes (1 a, 1 b), two or more sensor modules (27) and two or more housing supports (5), wherein Each measuring tube (1a, 1b) comprises a holder (17) arranged on the outside of a wall (9) of the measuring tube (1a, 1b), which has a mounting surface (19) on its side facing away from the interior (11) of the measuring tube (1a, 1b) that is identical in construction for all measuring tubes (1a, 1b) of the system, each housing support (5) comprises a first end on which a housing (7) is arranged, mountable or mounted, and has a base (23) at a second end opposite the first end, and each sensor module (27) comprises a base body (23) which has on an end face a first end face (31) that is complementary to the identical mounting surfaces (19) of the holders (17) of the measuring tubes (1b, 1b) of the system.

15. System according to claim 14, wherein: the measuring tubes (1a, 1b) comprise at least two measuring tubes (1a, 1b) made of different materials, having different dimensions, different nominal diameters, different tube lengths, different mounting flanges (75), and / or designed for different nominal pressures; the measuring tubes (1a, 1b) comprise at least one measuring tube (1a) designed as an intermediate flange tube clampable between two pipe flanges (67); at least one measuring tube (1b) comprising a mounting flange (75) at each of its opposite ends; and / or at least one measuring tube connectable to segments of a pipeline present at the place of use by joining or welding; and at least one or each measuring tube (1a,1 b) a through-opening (37) extending through the holder (17) and the wall (9) of the measuring tube (1a) or a through-opening (37) extending through the holder (17) and the wall (9) of the measuring tube (1a) with an inner diameter of 5 mm to 45 mm and / or a cross-sectional area of ​​20 mm², 2 up to 16 cm 2 includes the housing supports (5), comprising two or more identical housing supports (5), comprising two or more different housing supports (5), and / or comprising at least two housing supports made of different materials, having different dimensions, and / or having different lengths housing supports (5) comprise, and / or housing supports (5) on which different housings (7) are arranged, mountable or mounted, the bases (23) and the base bodies (29) have external dimensions corresponding to the external dimensions of the holders (17) of the measuring tubes (1a, 1b), the holders (17) each have a length (LH) in a direction parallel to the longitudinal axis of the adjacent section of the measuring tube (1a, 1b) which is less than or equal to a length specified for wafer tubes or a length of 65 mm specified for wafer tubes, and the holders (17), the base bodies (29) and at least also the bases (23) of the housing supports (5) have a width (BH) which is less than or equal to 32 mm, less than or equal to 38 mm or less than or equal to 40 mm, and / or which is less than or equal to a length specified for the measuring tubes (1a, 1b) of the system minimum nominal size determined, the training of the measuring instruments (100,300) as an intermediate flange device, the system comprises sensor modules (27) and housing supports (5) in which the base body (29) and at least the base (23) of the housing support (5) are designed as integral components of a single component, the system comprises sensor modules (27) and housing spigots (5) combinable therewith in which the base (23) has a mounting surface (25) on its side facing away from the first end of the housing support (5) and the base body (29) has a second end face (33) complementary to the mounting surface (25) of the base (23), and / or the system comprises sensor modules (27) for at least two different types of measuring instruments, which are designed to metrologically acquire measured quantities to be measured with measuring instruments (100, 200, 300) of the respective type of measuring instrument.

16. Use of a system according to claims 14 to 15 in a method for manufacturing measuring instrument variants (100, 200, 300) according to claims 1 to 13 designed for different requirements, wherein in the manufacture of each measuring instrument (100, 200, 300) the following is selected: one of the measuring tubes (1a, 1b) contained in the system is selected, one of the sensor modules (27) and one of the housing supports (5) of the system are arranged on the holder (17) of the measuring tube (1a, 1b), and the holder (17) of the measuring tube (1a, 1b), the base body (29) of the sensor module (27) and the base (23) of the housing support (5) are mechanically connected to each other.

Images