MODULAR MEASURING DEVICE FOR DETERMINING THE DENSITY OF A MEASURING MEDIUM

Description

[0001] The invention relates to a modular measuring device for determining the density of a measuring medium.

[0002] Such measuring devices are also called Coriolis meters. To measure the density of a medium, the medium is passed through a vibrating tube of the measuring device, while the vibrating tube is caused to vibrate by an exciter, and the resulting vibration of the vibrating tube is measured. The resulting vibration depends on the density of the medium flowing through the vibrating tube. By comparing the excitation vibration and the resulting vibration, the density of the medium can be determined. For this comparison, a phase shift or a change in amplitude between the excitation vibration and the resulting vibration of the vibrating tube is used, for example.

[0003] However, the resulting oscillation also depends on the temperature of the oscillating tube, which, for example, influences the area moment of inertia of the oscillating tube and thus the resulting oscillation of the oscillating tube. Accurate temperature measurement of the oscillating tube is therefore essential for determining the density of the measuring medium with the highest accuracy.

[0004] In some industrial applications, measuring media are used that require time-consuming and costly cleaning of the vibrating tube. For such applications, it is desirable to use disposable vibrating tubes that are interchangeably arranged in the Coriolis flowmeter. An example of such measuring devices is disclosed in WO 2011 / 099989 A1. WO 2011 / 099989 A1 discloses a Coriolis flowmeter in which the excitation and sensor systems are indirectly attached to the plastic measuring tubes and are thus replaced when the measuring tubes are replaced. Furthermore, a temperature sensor attached to the plastic measuring tubes is disclosed. In this case, changing the vibrating tube also implies changing the temperature sensor, since the latter is permanently attached to the vibrating tube.

[0005] Furthermore, depending on the industrial application, a predetermined diameter of the vibration tube is required to achieve different flow rates. Depending on the desired flow rate, it is therefore necessary to use different vibration tubes with different diameters.

[0006] It is therefore an object of the invention to provide a modular measuring device which enables the use of vibration tubes of different thicknesses and is at the same time cost-effective and precise.

[0007] This object is achieved according to the invention by a modular measuring device according to claim 1.

[0008] The modular measuring device according to the invention for determining the density of a measuring medium comprises: a carrier module, a first measuring tube module, and at least one further measuring tube module. The carrier module has a receptacle for releasably fastening the first measuring tube module or the at least one further measuring tube module, a contactless temperature sensor for determining an oscillating tube temperature, a primary excitation component, and a primary sensor component. Each measuring tube module has a fixation complementary to the receptacle of the carrier module, an oscillating tube, a secondary excitation component complementary to the primary excitation component, and a secondary sensor component complementary to the primary sensor component. Each oscillating tube of the measuring tube modules has a different tube diameter, a straight first tube leg, a straight second tube leg, a curved first tube bend, and a curved second tube bend.The first pipe legs are each connected to the first pipe bends at a primary connection point. The first pipe bends are connected to the second pipe bends, and the second pipe bends are each connected to the first pipe legs at a secondary connection point. The primary connection point and the secondary connection point lie in a respective plane for each measuring tube module. The planes are spaced from each other by a distance corresponding to a difference between the respective pipe diameters. The first pipe bends and the second pipe bends have an identical inner radius or an identical outer radius, so that the center lines associated with the respective vibration tubes intersect at a first intersection point and a second intersection point.The contactless temperature sensor is arranged such that when a measuring tube module is accommodated in the carrier module, the contactless temperature sensor is directed towards the first intersection point or the second intersection point.

[0009] The modular measuring device according to the invention enables the use of various vibrating tubes with different tube diameters. This allows the use of a suitable vibrating tube depending on the desired measurement accuracy. Furthermore, the contactless temperature sensor makes it possible to determine the vibrating tube temperature for each vibrating tube in a cost-effective, reliable, and accurate manner. Contactless temperature measurement means fewer parts of the modular measuring device are used only once, which reduces costs and is environmentally friendly. The specific shape of the various measuring tubes ensures that the temperature sensor is always positioned orthogonally to the surface to be measured on the various measuring tubes, enabling precise temperature measurements.

[0010] According to one embodiment of the invention, a pipe piece is arranged between the first pipe bend and the second pipe bend, which pipe piece connects the first pipe bend and the second pipe bend.

[0011] According to one embodiment of the invention, the pipe section is straight.

[0012] According to one embodiment of the invention, the first pipe leg and the second pipe leg extend parallel to each other.

[0013] According to one embodiment of the invention, the secondary excitation component of the measuring tube module is arranged on a longitudinal axis of the measuring tube module. The vibration tube is symmetrical to the longitudinal axis.

[0014] According to one embodiment of the invention, the primary excitation component comprises a coil and the secondary excitation component comprises a permanent magnet, or the secondary excitation component comprises a coil and the primary excitation component comprises a permanent magnet.

[0015] According to one embodiment of the invention, the secondary sensor component is arranged on the first pipe leg or on the second pipe leg of the measuring tube module.

[0016] According to one embodiment of the invention, each measuring tube module has at least two identical vibration tubes.

[0017] According to one embodiment of the invention, the measuring tube modules extend along a longitudinal axis, to which the oscillating tube is symmetrical. All measuring tube modules have the same extension length along the longitudinal axis.

[0018] According to one embodiment of the invention, the measuring tube modules extend along a longitudinal axis, to which the oscillating tube is symmetrical. All oscillating tubes intersect at a third intersection point on the longitudinal axis.

[0019] The invention is explained in more detail with reference to the following description of the figures. They show: Fig. 1: a representation of a modular measuring device according to the invention, Fig. 2 : a side view of a first embodiment of a measuring tube module, Fig. 3 : a side view of a second embodiment of a measuring tube module, Fig. 4 : a side view of a third embodiment of a measuring tube module, Fig. 5 : a side view of three measuring tube modules arranged one above the other with schematic projections of the tube cross-sections, and Fig. 6 : an enlarged view of the Fig. 5 shown superimposed measuring tube modules.

[0020] Figure 1shows the modular measuring device 1 according to the invention for determining the density of a measuring medium. The modular measuring device 1 comprises a carrier module 10, a first measuring tube module 20 and at least one further measuring tube module 40, 60. For example, the modular measuring device 1 comprises three different measuring tube modules, namely the first measuring tube module 20, a second measuring tube module 40 and a third measuring tube module 60 (see Figures 3 to 6 ). Of course, the modular measuring device 1 can also have more than three different measuring tube modules. The modular measuring device 1 preferably has a control unit 15, which is suitable for processing and evaluating the measured values ​​determined by the modular measuring device 1.

[0021] The carrier module 10 of the modular measuring device 1 has a receptacle 11 for releasably securing the measuring tube modules 20, 40, 60, a contactless temperature sensor 12, a primary excitation component 13, and a primary sensor component 14. The contactless temperature sensor 12, the primary excitation component 13, and the primary sensor component 14 are connected to the control unit 15 to be controlled by the control unit 15. The carrier module 10 is preferably made of a corrosion-resistant metal or a plastic. The receptacle 11 is, for example, as shown in Figure 1 shown, a groove, or a differently designed receptacle 11. The contactless temperature sensor 12 is, for example, an infrared sensor, a laser system for temperature measurement, or another temperature sensor based on a contactless measuring method. The temperature sensor 12 is in Figure 1shown only schematically. The primary excitation component 13 is, for example, a coil which is suitable for generating a magnetic field. The excitation component 13 will be discussed in detail later. The excitation component 11 is in Figure 1 shown only schematically. The primary sensor component 14 is, for example, a coil that is suitable for detecting a magnetic field. The primary sensor component 14 will also be discussed in detail later. The primary sensor component 14 is also shown in Figure 1 only shown schematically.

[0022] As in Figures 2 to 4 As shown, each measuring tube module 20, 40, 60 of the modular measuring device 1 has a fixation 21, 41, 61 complementary to the receptacle 11 of the carrier module 10, a vibration tube 22, 42, 62, a secondary excitation component 23, 43, 63 complementary to the primary excitation component 13 and a secondary sensor component 24, 44, 64 complementary to the primary sensor component 14.

[0023] The fixation 21, 41, 61 is, for example, a plate-shaped element with a thickness corresponding to the width of the groove, so that the fixation 21, 41, 61 can be inserted into the groove. The fixation 21, 41, 61 and / or the receptacle 11 preferably have a stop to arrange the measuring tube module 20, 40, 60 in a predetermined and reproducible position in the carrier module 10. Of course, other embodiments of the fixation are also possible, provided they allow a positive and precise holding of the measuring tube modules 20, 40, 60 in the carrier module 10 of the modular measuring device 1.

[0024] The secondary excitation component 23, 43, 63 of the measuring tube module 20, 40, 60 is preferably arranged on the measuring tube module 20, 40, 60 on a longitudinal axis Y, wherein the oscillation tube 22, 42, 62 is symmetrical to the longitudinal axis Y. Either the primary excitation component 13 comprises a coil and the secondary excitation component 23, 43, 63 comprises a permanent magnet, or the secondary excitation component 23, 43, 63 comprises a coil and the primary excitation component 13 comprises a permanent magnet. The secondary excitation component 23, 43, 63 is preferably arranged on an inner side of a tube leg 25, 26, 45, 46, 65, 66, i.e., a side facing the longitudinal axis Y. Thus, the secondary excitation component 23, 43, 63 is particularly well protected from damage.

[0025] The secondary sensor component 24, 44, 64 is preferably arranged on the first pipe leg 25, 45, 65 or on the second pipe leg 26, 46, 66 of the measuring tube module 20, 40, 60. Either the primary sensor component 14 comprises a coil and the secondary sensor component 24, 44, 64 comprises a permanent magnet, or the secondary sensor component 24, 44, 64 comprises a coil and the primary sensor component 14 comprises a permanent magnet. The secondary sensor component 24, 44, 64 is preferably arranged on an inner side of a pipe leg 25, 26, 45, 46, 65, 66, i.e., a side facing the longitudinal axis Y. Thus, the secondary sensor component 24, 44, 64 is particularly well protected against damage.

[0026] As in Figures 2 to 4As shown, each vibration tube 22, 42, 62 of the measuring tube modules 20, 40, 60 has a different tube diameter RD1, RD2, RD3, a straight first tube leg 25, 45, 65, a straight second tube leg 26, 46, 66, a curved first tube bend 27, 47, 67 and a curved second tube bend 28, 48, 68. The vibration tubes 22, 42, 62 preferably have a circular cross-sectional shape. Of course, the vibration tubes can also have any other cross-sectional shape, provided this is compatible with the technical teaching of this invention. The vibration tubes 22, 42, 62 are preferably made of corrosion-resistant metal, e.g. stainless steel, or plastic. The tube diameters RD1, RD2, and RD3 of the vibrating tubes 22, 42, and 62 of the measuring tube modules 20, 40, and 60 are preferably between 3 and 15 mm. The tube diameter is measured on the outer surface of the vibrating tube.

[0027] Figure 5shows a superimposed side view of the measuring tube modules 20, 40, 60. In this illustration, a difference D1 between the tube diameter RD1 of the oscillating tube 22 of the first measuring tube module 20 and the tube diameter RD2 of the oscillating tube 42 of the second measuring tube module 40 is clearly visible. Likewise, a difference D2 between the tube diameter RD1 of the oscillating tube 22 of the first measuring tube module 20 and the tube diameter RD3 of the oscillating tube 62 of the third measuring tube module 60 is shown, as well as a difference D3 between the tube diameter RD2 of the oscillating tube 42 of the second measuring tube module 40 and the tube diameter RD3 of the oscillating tube 62 of the third measuring tube module 60.

[0028] Figure 5For better understanding, also shows a projection of a cross-section of the vibration tubes 22, 42, 62 at various locations (shown in dashed lines). These superimposed views result when the measuring tube modules 20, 40, 60 are each arranged in the carrier module 10. The holder 11 of the carrier module 10 and the fixation 21, 41, 61 of the measuring tube modules 20, 40, 60 enable a precise positioning of the measuring tube modules 20, 40, 60 in the carrier module 10 to be reproduced. Figure 5Also shown is a plane E1 associated with the first measuring tube module 20, a plane E2 associated with the second measuring tube module 40, and a plane E3 associated with the third measuring tube module 60. Planes E1, E2, E3 define a connection point, or rather a connection plane, between the straight pipe legs 25, 26, 45, 46, 65, 66 and the curved pipe bends 27, 28, 47, 48, 67, 68. The connection points will be discussed in detail below. In this context, a connection point is understood to be the connection point between a straight pipe leg and a curved pipe bend. In a cylindrical vibration tube, the connection point is therefore circular.

[0029] In Figure 6For the sake of clarity, a different line type was used for each of the measuring tube modules. Information relating to the first measuring tube module 20 was represented by a dash-dotted line. Information relating to the second measuring tube module 40 was represented by a dashed line. Information relating to the third measuring tube module 60 was represented by a dotted line.

[0030] Figure 6shows that the first pipe legs 25, 45, 65 are each connected to the first pipe bends 27, 47, 67 at a primary connection point VP1, VP2, VP3. The first pipe bends 27, 47, 67 are connected to the second pipe bends 28, 48, 68. The second pipe bends 28, 48, 68 are each connected to the first pipe legs 25, 45, 65 at a secondary connection point VS1, VS2, VS3. In other words, each measuring tube module 20, 40, 60 can be assigned a primary connection point and a secondary connection point, as shown in Figure 6visible. The primary connection point VP1, VP2, VP3 and the secondary connection point VS1, VS2, VS3 of each measuring tube module 20, 40, 60 are located in the respective plane E1, E2, E3 assigned to the measuring tube module. The planes E1, E2, E3 are arranged parallel to one another by a predetermined distance. The plane E1 of the first measuring tube module 20 is spaced from the plane E2 of the second measuring tube module 40 by a distance A1. The plane E1 of the first measuring tube module 20 is spaced from the plane E3 of the third measuring tube module 60 by a distance A2. The plane E2 of the second measuring tube module 40 is spaced from the plane E3 of the third measuring tube module 60 by a distance A3.

[0031] The distance A1 corresponds to a difference D1 between the tube diameter RD1 of the oscillating tube 22 of the first measuring tube module 20 and the tube diameter RD2 of the oscillating tube 42 of the second measuring tube module 40. The distance A2 corresponds to a difference D2 between the tube diameter RD1 of the oscillating tube 22 of the first measuring tube module 20 and the tube diameter RD3 of the oscillating tube 62 of the third measuring tube module 60. The distance A3 corresponds to a difference D3 between the tube diameter RD2 of the oscillating tube 42 of the second measuring tube module 40 and the tube diameter RD3 of the oscillating tube 62 of the third measuring tube module 60.

[0032] As in Figure 6As illustrated by the different offset circular lines, the first pipe bends 27, 47, 67 and the second pipe bends 28, 48, 68 preferably have an identical inner radius IR1, IR2, IR3. Alternatively to an identical inner radius, the different pipe bends can also have an identical outer radius AR1, AR2, AR3 (in Figure 6 (only indicated for the first measuring tube module). Due to the spacing of the planes E1, E2, E3 and the identical inner radii IR1, IR2, IR3 and identical outer radii AR1, AR2, AR3, the center lines ML1, ML2, ML3 associated with the oscillation tubes 22, 42, 62 intersect at a first intersection point S1 and a second intersection point S2. The respective center line of the oscillation tube runs through the center of the oscillation tube.

[0033] The first vibration tube therefore has a center line ML1. The second vibration tube therefore has a center line ML2. The third vibration tube therefore has a center line ML3. In the straight tube legs of the vibration tubes, the center lines correspond to the cylinder axes of the tube legs. The first intersection point S1 and the second intersection point S2 can also be understood as an intersection area or intersection volume. This means that all center lines of the various measuring tube modules intersect in an intersection area or intersection volume. The intersection area is preferably a few square millimeters, for example 1 mm 2 to 25 mm 2 . The intersection volume is preferably a few cubic millimeters, for example 1 mm 3 to 125 mm 3 .

[0034] The contactless temperature sensor 12 is arranged in the carrier module 10 such that, when a measuring tube module 20, 40, 60 is accommodated in the carrier module 10, the contactless temperature sensor 12 is directed toward the first intersection point S1 or the second intersection point S2. This ensures that an alignment axis of the temperature sensor 12, along which the measurement signal of the temperature sensor 12 runs, intersects the first intersection point S1 or the second intersection point S2. This allows the measurement signal, for example, an optical infrared signal of the temperature sensor 12, for each measuring tube module 20, 40, 60 to impinge on a surface of the vibration tube 22, 42, 62 that is orthogonal to the alignment axis of the temperature sensor 12. Thanks to the orthogonally arranged surface of the vibration tube 22, 42, 62, the measurement signal is optimally reflected back to the temperature sensor 12 along the alignment axis, thus enabling precise temperature measurement.

[0035] According to a not-shown embodiment of the measuring tube modules 20, 40, 60, a pipe section is arranged between the first pipe bend 27, 47, 67 and the second pipe bend 28, 48, 68. The pipe section is, for example, straight or curved. Such a pipe section allows, for example, sufficient space for the secondary excitation body 23, 43, 63.

[0036] As in Figure 5 As shown, the first pipe leg 25, 45, 65 and the second pipe leg 26, 46, 66 preferably extend parallel to one another. Of course, it is also possible for the first pipe leg 25, 45, 65 and the second pipe leg 26, 46, 66 to be arranged non-parallel to one another, provided that the two pipe legs are arranged symmetrically to a longitudinal axis Y of the measuring tube module 20, 40, 60.

[0037] According to the Figure 1In the embodiment shown, each measuring tube module 20, 40, 60 has at least two identical vibration tubes 22, 42, 62. As far as technically feasible, each measuring tube module 20, 40, 60 can also have more than two identical vibration tubes.

[0038] As in Figure 5 As illustrated, the respective measuring tube modules 20, 40, 60 extend along the longitudinal axis Y, to which the respective vibration tubes 22, 42, 62 are symmetrical. All measuring tube modules 20, 40, 60 preferably have the same extension length along the longitudinal axis Y.

[0039] Figure 6shows that the measuring tube modules 20, 40, 60 extend along a longitudinal axis Y, to which the vibration tubes 22, 42, 62 are symmetrical. Preferably, all vibration tubes 22, 42, 62 intersect at a third intersection point S3, which lies on the longitudinal axis Y when the vibration tubes 22, 42, 62 are each arranged in the support module 10. In other words, each vibration tube 22, 42, 62, when arranged in the support module 10, extends to the intersection point S3. The intersection point S3 thus also forms a vertex for the vibration tubes 22, 42, 62.

[0040] If the pipe bends 27, 28, 47, 48, 67, 68 of the vibration tubes 22, 42, 62 have an identical inner radius IR1, IR2, IR3, the intersection point S3 is located on the outside of the vibration tubes, as in Figure 6 shown.

[0041] If the inner radii IR1, IR2, IR3 of the pipe bends are identical, the inner sides of all first pipe legs 25, 45, 65, as well as the inner sides of all second pipe legs 26, 46, 66, are flush with each other when the measuring tube modules 20, 40, 60 are arranged one above the other (see Figure 5 ). Naturally, the term "inner side" refers to the bend of the measuring tube module, i.e., the side facing the inner radius.

[0042] If the pipe bends 27, 28, 47, 48, 67, 68 of the oscillating tubes 22, 42, 62 have an identical outer radius AR1, AR2, AR3, the intersection point S3 is located on the inside of the oscillating tubes (not shown). Naturally, the term "inside" here refers to the bend of the measuring tube module, i.e., facing the inner radius.

[0043] If the outer radii AR1, AR2, AR3 of the pipe bends are identical, the outer sides of all first pipe legs 25, 45, 65, as well as the outer sides of all second pipe legs 26, 46, 66, are flush with each other when the measuring tube modules 20, 40, 60 are arranged one above the other (not shown). Naturally, the term "outer side" refers to the bend of the measuring tube module, i.e., the bend facing away from the inner radius. List of reference symbols

[0044] 1 modular measuring device 10 carrier module 11 mount 12 temperature sensor 13 primary excitation component 14 primary sensor component 15 control unit 20First measuring tube module 21Fixing of the first measuring tube module 22Vibration tube of the first measuring tube module 23Secondary excitation component of the first measuring tube module 24Secondary sensor component of the first measuring tube module 25First pipe leg of the first measuring tube module 26Second pipe leg of the first measuring tube module 27First pipe bend of the first measuring tube module 28Second pipe bend of the first measuring tube module 40Second measuring tube module 41Fixing of the second measuring tube module 42Vibration tube of the second measuring tube module 43Secondary excitation component of the second measuring tube module 44Secondary sensor component of the second measuring tube module 45First pipe leg of the second measuring tube module 46Second pipe leg of the second measuring tube module 47First pipe bend of the second measuring tube module 48Second pipe bend of the second measuring tube module 60Third measuring tube module 61Fixing of the third measuring tube module 62Vibration tube of the third measuring tube module 63Secondary excitation component of the third measuring tube module 64Secondary sensor component of the third measuring tube module 65First pipe leg of the third measuring tube module 66Second pipe leg of the third measuring tube module 67First pipe bend of the third measuring tube module 68Second pipe bend of the third measuring tube module A1Distance from level E1 to level E2 A2Distance from level E1 to level E3 A3Distance from level E2 to level E3 AR1Outer radius of the first measuring tube module AR2Outer radius of the second measuring tube module AR3Outer radius of the third measuring tube module D1Difference in pipe diameters between the first measuring tube module and the second measuring tube module D2Difference in pipe diameters between the first measuring tube module and the third measuring tube module D3Difference in pipe diameters between the second measuring tube module and the third measuring tube module E1Level of the first measuring tube module E2Level of the second measuring tube module E3Level of the third measuring tube module IR1Inner radius of the first measuring tube module IR2Inner radius of the second measuring tube module IR3Inner radius of the third measuring tube module ML1Center line of the first measuring tube module ML2Center line of the second measuring tube module ML3Center line of the third measuring tube module RD1Pipe diameter of the first measuring tube module RD2Pipe diameter of the second measuring tube module RD3Pipe diameter of the third measuring tube module VP1 primary connection point of the first measuring tube module VP2 primary connection point of the second measuring tube module VP3 primary connection point of the third measuring tube module VS1Secondary connection point of the first measuring tube module VS2Secondary connection point of the second measuring tube module VS3Secondary connection point of the third measuring tube module

Claims

1. Modular measuring device (1) for determining a density of a measuring medium, comprising: a carrier module (10), a first measuring tube module (20) and at least one further measuring tube module (40, 60), wherein the carrier module (10) has a receptacle (11) for detachably fastening the first measuring tube module (20) or the at least one further measuring tube module (40, 60), a contactless temperature sensor (12) for determining an oscillating tube temperature, a primary exciter component (13) and a primary sensor component (14), wherein each measuring tube module (20, 40, 60) comprises a fixation (21, 41, 61) complementary to the receptacle (11) of the carrier module (10), a vibration tube (22, 42, 62), a secondary exciter component (23, 43, 63) complementary to the primary exciter component (13) and a secondary sensor component (24, 44, 64) complementary to the primary sensor component (14), wherein each oscillating tube (22, 42, 62) of the measuring tube modules (20, 40, 60) has a different tube diameter (RD1, RD2, RD3), a straight first tube leg (25, 45, 65), a straight second tube leg (26, 46, 66), a curved first tube bend (27, 47, 67) and a curved second tube bend (28, 48, 68) wherein the first pipe legs (25, 45, 65) are each connected to the first pipe bends (27, 47, 67) at a primary connection point (VP1, VP2, VP3), the first pipe bends (27, 47, 67) are connected to the second pipe bends (28, 48, 68), and the second pipe bends (28, 48, 68) are each connected to the first pipe legs (26, 46, 66) at a secondary connection point (VS1, VS2, VS3), whereby the primary connection point (VP1, VP2, VP3) and the secondary connection point (VS1, VS2, VS3) for each measuring tube module (20, 40, 60) lie in a respective plane (E1, E2, E3), wherein the planes (E1, E2, E3) have a respective distance (A1, A2, A3) from one another, which corresponds to a difference (D1, D2, D3) between the respective pipe diameters (RD1, RD2, RD3), wherein the first pipe bends (27, 47, 67) and the second pipe bends (28, 48, 68) have an identical inner radius (IR1, IR2, IR3) or an identical outer radius (AR1, AR2, AR3), so that the center lines (ML1, ML2, ML3) associated with the respective oscillating tubes (22, 42, 62) intersect at a first intersection point (S1) and at a second intersection point (S2), wherein the contactless temperature sensor (12) is arranged such that when a measuring tube module (20, 40, 60) is accommodated in the carrier module (10), the contactless temperature sensor (12) is directed towards the first intersection point (S1) or the second intersection point (S2).

2. Modular measuring device (1) according to claim 1, wherein a pipe section is arranged between the first pipe bend (27, 47, 67) and the second pipe bend (28, 48, 68), which pipe section connects the first pipe bend (27, 47, 67) and the second pipe bend (28, 48, 68).

3. Modular measuring device (1) according to claim 2, wherein the pipe section is straight4. Modular measuring device (1) according to any one of claims 1 to 3, wherein the first tubular leg (25, 45, 65) and the second tubular leg (26, 46, 66) extend parallel to each other.

5. Modular measuring device (1) according to one of the preceding claims, wherein the secondary excitation component (23, 43, 63) of the measuring tube module (20, 40, 60) is arranged on the measuring tube module (20, 40, 60) on a longitudinal axis (Y), wherein the oscillating tube (22, 42, 62) is symmetrical to the longitudinal axis (Y).

6. Modular measuring device (1) according to any one of the preceding claims, wherein the primary excitation component (13) comprises a coil and the secondary excitation component (23, 43, 63) comprises a permanent magnet, or wherein the secondary excitation component (23, 43, 63) comprises a coil and the primary excitation component (13) comprises a permanent magnet.

7. Modular measuring device (1) according to one of the preceding claims, wherein the secondary sensor component (24, 44, 64) is arranged on the first tube leg (25, 45, 65) or on the second tube leg (26, 46, 66) of the measuring tube module (20, 40, 60).

8. Modular measuring device (1) according to one of the preceding claims, wherein each measuring tube module (20, 40, 60) comprises at least two identical vibration tubes (22, 42, 62).

9. Modular measuring device (1) according to one of the preceding claims, wherein the measuring tube modules (20, 40, 60) extend along a longitudinal axis (Y) to which the oscillation tube (22, 42, 62) is symmetrical, wherein all measuring tube modules (20, 40, 60) have the same extension length along the longitudinal axis (Y).

10. Modular measuring device (1) according to one of the preceding claims, wherein the measuring tube modules (20, 40, 60) extend along a longitudinal axis (Y) to which the oscillation tube (22, 42, 62) is symmetrical, wherein all oscillation tubes (22, 42, 62) intersect at a third intersection point (S3) on the longitudinal axis (Y).