Modular coriolis flowmeter and method for producing a coil device

Abstract

The invention relates to a modular coriolis flowmeter (2) for determining a process variable of a flowable medium, comprising: a measuring tube module (4), wherein the measuring tube module (4) has at least one measuring tube (3i) for guiding the medium; a carrier module (16) with a receiving means (23) for receiving the measuring tube module (4) in a carrier module body (22), wherein the carrier module body (22) has at least one coil opening (79), wherein a coil device (201) is arranged in the at least one coil opening (79), wherein the coil device (201) has a winding body (202) and a coil wire (203), wherein the winding body (202) has at least one elevation (204), in particular having at least sections with a hollow cylindrical shape, for securing the coil wire (203), wherein the coil wire (203) is wound at least partially around the at least one elevation (204a, 204b) in order to form a coil (205); a measuring and / or operating circuit (15), wherein the measuring and / or operating circuit (15) is designed to apply an excitation signal to the at least one coil device (201) and / or to detect a sensor signal at the at least one coil device (201). The invention also relates to a method for producing a coil device (201) for a, in particular modular, coriolis flowmeter (2).

Description

[0001] Modular Coriolis flowmeter and method for manufacturing a coil device

[0002] The invention relates to a modular Coriolis flowmeter for determining a process variable of a flowable medium and a method for producing a coil device of a modular Coriolis flowmeter.

[0003] Field devices for process measurement technology with a vibration-type sensor, and in particular Coriolis flowmeters, have been known for many years. The basic design of such a measuring device is described, for example, in EP 1 807 681 A1, whereby the design of a generic field device is fully incorporated by reference in this publication within the scope of the present invention.

[0004] Typically, Coriolis flowmeters have at least one or more oscillating measuring tubes, which can be set into vibration by a vibration exciter. These vibrations are transmitted along the length of the tube and are varied by the type of fluid contained in the measuring tube and its flow velocity. A vibration sensor, or in particular two spaced-apart vibration sensors, can record the varied vibrations at another location in the measuring tube in the form of one or more measurement signals. An evaluation unit can then determine the mass flow, viscosity, and / or density of the medium from the measurement signal(s).

[0005] Modular Coriolis flowmeters with interchangeable disposable measuring tube modules are known. For example, WO 2011 / 099989 A1 teaches a method for manufacturing a monolithic measuring tube module of a Coriolis flowmeter with curved measuring tubes. The measuring tube body of each measuring tube is first formed from a solid polymer, and the channel for guiding the flowable medium is then machined into the housing. WO 2011 / 099989 A1, like US Pat. No. 10,209,113 B2, teaches a connecting body designed to accommodate and support interchangeable measuring tube modules with thin-walled plastic tubes. The measuring tube module is secured in a receiving module equipped with the necessary exciters and sensors via the connecting body.Modular Coriolis flowmeters, in which the excitation coil and sensor coils are arranged on a metallic housing and the excitation and sensor magnets are used on the measuring tube module, are susceptible to parasitic influences on the measurement of the process variable when magnetic fields change. These cannot be fully compensated for by factory adjustment. WO 2022 / 122420 A1 provides a remedy for this problem, which teaches the provision of an electrically insulating coil holder in the metallic wall of the support module.

[0006] The invention is based on the object of further developing the cited prior art. This object is achieved by the modular Coriolis flowmeter according to claim 1 and the method for manufacturing a coil device according to claim 15.

[0007] The modular Coriolis flowmeter according to the invention for determining a process variable of a flowable medium comprises:

[0008] - a measuring tube module, wherein the measuring tube module comprises at least one measuring tube for guiding the medium;

[0009] - a carrier module with a receptacle for receiving the measuring tube module in a carrier module body, wherein the carrier module body has at least one housing body opening, wherein a coil device is arranged in the at least one housing body opening, wherein the coil device comprises a winding body and a coil wire, wherein the winding body has at least one elevation, in particular at least partially hollow-cylindrical, for fastening the coil wire, wherein the coil wire is at least partially wound around the at least one elevation to form a coil,

[0010] - a measuring and / or operating circuit, wherein the measuring and / or operating circuit is configured to apply an excitation signal to the at least one coil device and / or to detect a sensor signal at the at least one coil device.

[0011] The advantage of the solution according to the invention is not only the simplification of the assembly of the coil device on the carrier module, but also the simplification of the winding of the coil wire to form the coil resulting from the structural design of the winding body.

[0012] Advantageous embodiments of the invention are the subject of the subclaims.

[0013] One embodiment provides that the coil device comprises a contacting device, wherein the contacting device has at least one coil opening through which the at least one elevation extends, wherein the contacting device has at least one contacting surface for the coil wire, in particular on a front side, wherein the coil wire is electrically connected to the contacting device, in particular to the contacting surface.

[0014] The contacting device, preferably in the form of a printed circuit board or circuit board, simplifies the electrical connection of the coil device to the measuring and / or operating circuit. The contacting device has its own mechanical stability, simplifying the assembly of the coil wire ends to the contact surfaces.

[0015] One embodiment provides that the winding body has two elevations, wherein the contacting device has two coil openings, wherein an elevation extends through each of the two coil openings, wherein the coil wire is wound around the two elevations.

[0016] One embodiment provides that the two elevations are oriented in such a way that the coil wire is wound in an oval shape.

[0017] The advantage of the oval shape of the wound coil wire is a reduction in sensitivity or loss due to manufacturing tolerances when, for example, arranging the magnets on the measuring tube or positioning the opening for the coil device.

[0018] One embodiment provides that in an area around the at least one elevation, in particular around the two elevations, there is a depression in the winding body.

[0019] One embodiment provides that the contacting device is planar at least on its rear side and rests with the rear side on a front surface of the winding body.

[0020] One embodiment provides that the contacting device has at least one contact surface for a connecting wire on a rear side.

[0021] Alternatively, the contacting device can also have at least one contact surface for a connecting wire on the front side. Alternatively, the connecting wire can be electrically connected to the contact surfaces of the coil wire.

[0022] One embodiment provides that the connecting wire comprises a coaxial cable, which connects the coil device to the measuring and / or operating circuit. One embodiment provides that the winding body has a projection designed to act as a strain relief for the connecting wire.

[0023] One embodiment provides that the coil device comprises a coil carrier, wherein the coil is arranged in a coil carrier receptacle such that the contacting device rests on a receiving surface of the coil carrier.

[0024] The coil device protects the coil device from environmental influences such as liquids or mechanical shocks. It also simplifies centering the coil device in the designated opening.

[0025] One embodiment provides for a hardened potting compound to be present in the coil carrier holder.

[0026] The potting compound is preferably used to create a material-to-material connection between the coil carrier and the coil device.

[0027] One embodiment provides that the coil carrier has a separating membrane which separates the coil wire from the receptacle of the carrier module body, wherein the separating membrane has a material thickness of 0.05 < d < 2 millimeters, in particular 0.1 < d < 1.5 millimeters and preferably 0.2 < d < 1 millimeter.

[0028] The selected material thickness ensures the necessary mechanical stability while simultaneously achieving a minimal reduction in the generated magnetic field or the magnetic field to be measured. One embodiment provides for the measuring tube module to be mechanically detachably connected or connectable to the carrier module, in particular to the carrier module body.

[0029] One embodiment provides that the carrier module has a coil device fastening means which is designed to fasten the coil device in the at least one housing body opening at a variable distance from the measuring tube module arranged in the receptacle.

[0030] The coil device fastening device allows the optimal position of the coil device to be adjusted manually when adjusting the carrier module.

[0031] The method according to the invention for producing a coil device for a, in particular modular, Coriolis flowmeter, comprising the method steps:

[0032] - Arranging a contacting device on a winding body for fastening and / or electrically contacting a coil wire, wherein the winding body has at least one elevation, wherein the contacting device has at least one coil opening, wherein the at least one elevation is guided through the at least one coil opening;

[0033] - winding the coil wire around the at least one elevation to form a coil, wherein the winding body takes on the role of a winding mandrel; and

[0034] - Connecting the coil wire to at least one contact surface of the contacting device.

[0035] One embodiment provides that a hole extends through the at least one elevation, in particular in each case, for receiving a counter-disk, wherein the counter-disk is arranged on the winding body when the coil wire is wound up.

[0036] One design provides for further procedural steps, namely:

[0037] - Arranging the coil in a coil carrier receptacle of a coil carrier; and / or

[0038] - Heating of the coil wire during winding thermally or inductively, or subsequently in the furnace; and

[0039] - Allowing the wound coil wire to harden; and / or

[0040] - Potting the coil carrier holder with a potting compound.

[0041] The invention is explained in more detail with reference to the following figures. They show:

[0042] Fig. 1 : a design of the modular Coriolis flowmeter;

[0043] Fig. 2a-d: four perspective views of individual manufacturing steps of the coil device;

[0044] Fig. 3 : a perspective view of the embodiment of the coil device from Fig. 2 in a coil carrier;

[0045] Fig. 4 : a cross-sectional view of an obliquely cut representation of an embodiment of the

[0046] Fig. 3; and

[0047] Fig. 5 : a longitudinal sectional view through a housing body opening with arranged coil device and coil device fastening means.

[0048] Fig. 1 shows a perspective view of a modular Coriolis flowmeter 2, which is particularly suitable for pharmaceutical bioprocess applications. A Coriolis flowmeter 2 is a measuring device for measuring a mass flow, a viscosity, a density, and / or a variable derived therefrom of a flowable medium. The measuring tube module 4 is designed to be inserted into a receptacle 23 of a receiving module 16 in an exchangeable manner, i.e., mechanically detachable. For this purpose, only individual components of the vibration exciter and the vibration sensors, in this case the respective magnet assemblies 9a, 9b, are attached to the measuring tube module 4, in particular to the measuring tubes 3a, 3b of the measuring tube module 4. The magnet assembly 9a, 9b comprises at least one excitation magnet and at least one sensor magnet. According to the illustrated embodiment, the two magnet assemblies 9a, 9b each comprise exactly one excitation magnet 36 and exactly two sensor magnets 38.The other components of the vibration exciter and the vibration sensors are arranged in the receiving module 16, in particular in the receptacle 23—in particular in a coil receptacle of the carrier module body 22—which is suitable and designed to receive the measuring tube module 4. The measuring tube module 4 comprises two curved, parallel measuring tubes 3a, 3b, which are connected to one another via a coupler arrangement 1 consisting of four coupling elements 6, and via a fixing body arrangement 5. Two coupling elements 6a are integrally mounted in an inlet, and two further coupling elements 6b are integrally mounted in the outlet of the respective measuring tubes 3a, 3b. The measuring tubes 3a, 3b are shaped such that the flow direction, represented by two arrows, in the inlet is oriented opposite to the flow direction in an outlet.A flow divider (not shown) can be arranged in each of the inlet and outlet, which flow divider has a process connection for connecting to a hose and / or plastic pipe system. According to one embodiment, exactly one flow divider body can be provided instead of two separate flow dividers, which is pushed onto the inlet and the outlet and helps to decouple the measuring tube module 4 from the environment after installation in the receiving module 16. The individual coupling elements 6i are plate-shaped and made of one or two parts. The coupling elements 6i can each completely or only partially encompass the measuring tubes. The measuring tubes 3a, 3b are U-shaped, i.e. they each have two legs 11 that run essentially parallel to one another and are connected by a curved section. The magnet arrangement 9a, 9b is arranged on each measuring tube 3a, 3b.A magnet 10a—in particular, an excitation magnet 36—of the magnet arrangement 9a, 9b is arranged in the curved section, forming a component of the vibration exciter. A magnet 10ba—in particular, a sensor magnet 38—is mounted in each of the two legs 11, forming part of the vibration exciter. The magnets 10i are attached to mounting surfaces. In this embodiment, the mounting surfaces are located on the respective measuring tubes 3a, 3b.

[0049] The measuring tube module 4 shown is partially inserted into a receptacle 23 of the receiving module 16. An arrow indicates the direction of insertion. In the embodiment, this runs perpendicular to a longitudinal direction of the receptacle 23. The receptacle can also be designed such that the measuring tube module 4 is inserted in the longitudinal direction of the receptacle. The receiving module 16 has a measuring and / or operating circuit 15, which is connected to the vibration exciters and vibration sensors, in particular to the respective coil systems, and is configured to generate and / or detect a temporally changing magnetic field. The measuring and / or operating circuit 15 comprises integrated circuits in the form of a microcontroller or an ASIC. Furthermore, the measuring and / or operating circuit 15 optionally has electronic components such as electrical resistors, transistors, diodes, amplifiers, filters and / or capacitors.Furthermore, the measuring and / or operating circuit 15 can have a permanent memory (ROM, PROM, RAM, EPROM, etc.). The receiving module 16 has a carrier module body 22 in which the receptacle 23 is located. The carrier module body 22 has, at least in sections, an electrically conductive and in particular ferromagnetic material. Furthermore, the carrier module body 22 can be formed from a metallic material. The connecting body 5 of the measuring tube module 4 has mounting surfaces 26, which serve to arrange the measuring tube module 4 in a predetermined position in the receiving module 16. According to the illustrated embodiment, the perpendicular to the mounting surface 26 points perpendicular to the longitudinal direction of the measuring tube module 4. According to a further advantageous embodiment, the perpendicular to the mounting surface 26 points in the direction of the longitudinal axis of the measuring tube module 4.The surface of the carrier module body 22 in contact with the mounting surface 26 of the connecting body 5 is the support surface 27.

[0050] The receiving module 16 has two mutually parallel side surfaces, which delimit the receptacle 23 transversely to the longitudinal direction of the receptacle 23. The sensor coils 39 of the vibration sensors 8a, 8b and the excitation coils 37 of the vibration exciter 7 are arranged in the side surfaces or in openings inserted into the side surfaces. The sensor coils 39 are arranged offset from the excitation coils 37 in the longitudinal direction of the receptacle 23. The excitation coil 37 and the two sensor coils 39, which are arranged on a side surface of the receiving module 16, are located in a common coil plane. Furthermore, in the illustrated embodiment, the excitation coils 37 and sensor coils 39 are each designed as plate coils and are recessed into the corresponding side surface.The excitation coil 37 and the sensor coils 39 are arranged on one side surface in such a way that, when the measuring tube module 3 is installed, they are located opposite the corresponding magnet arrangements 9a, 9b. A guide is incorporated into each of the two side surfaces, which extends perpendicular to the longitudinal direction of the receptacle 23 and parallel to the coil plane. The connecting body 5 can be inserted into this guide. According to the embodiment shown, the guide extends over two end faces of the receptacle 23. This enables the measuring tube module 4 to be inserted perpendicular to the longitudinal direction of the measuring tube module 4. According to a further embodiment, the guide extends exclusively over one end face. In this case, the measuring tube module 4 is to be inserted into the receptacle module 16 in the longitudinal direction of the measuring tube module 4 – or of the receptacle module 16. Fig.2a to d show four manufacturing steps of an inventive embodiment of the excitation coil or sensor coil, hereinafter referred to as coil device 201. The coil device 201 is not designed as a plate coil, as depicted in Fig. 1.

[0051] Instead, the coil device 201 has a winding body 202 (see Fig. 2a). The winding body 202 is made of an electrically insulating material (e.g., plastic) and can be manufactured by means of an injection molding process. The winding body 202 forms a base body of the coil 205, to which the coil wire 203 is attached. The winding body 202 has two elevations 204a, 204b, around which the coil wire 203 is wound in a later manufacturing step. The elevations 204a, 204 shown are cylindrical, at least in sections. However, they can also take on any other shapes suitable for holding the wound coil wire 203 in position. Alternatively, the winding body 202 can also have exactly one elevation 204 around which the coil wire 203 is wound. A through hole 221 extends through each of the two elevations 204a, 204b and the winding body 202.The two holes each serve as a receptacle for a cylindrical pin of a counter-disk, which is attached to the winding former 202 when the coil wire 203 is wound onto the winding former 202. The counter-disk serves to hold the winding former 202 and to limit the winding surface of the coil wire 203. On the front surface 212 of the winding former 202, the latter has a recess 210. The recess 210 is shaped such that it encloses the two elevations 204a, 204b. The recess 210 ensures that the front surface 212 of the winding former 202 is planar and that a contacting device 206, which is also planar at least on the rear side 211, rests on the front surface 212. The recess 210 prevents a rounded transition from forming between the elevation 204a, 204b and the front surface 212, which would result in the contacting device 206 not lying planar on the front surface 212.

[0052] In a second manufacturing step (Fig. 2b), a contacting device 206 is attached to the winding body 202. The contacting device 206 has two coil openings 207a, 207b through which the elevations 204a, 204b of the winding body 202 are guided. In the illustrated case, the contacting device 206 is a printed circuit board or circuit board with two contact surfaces 208 on the front side 209. The contacting device 206 serves, on the one hand, to contact the coil wire 203 and, on the other hand, to contact a connecting wire 214, with which the coil 205 is connected to the measuring and / or operating circuit 15.

[0053] In a third manufacturing step (Fig. 2c), the coil wire 203 is wound around the winding former 202, in particular around the two elevations 204a, 204b. This results in an oval coil shape. To wind the coil wire 203, the winding former 202 is connected to a counter-disk. The winding former 202 takes on the role of the winding mandrel during winding. First, one end of the coil wire 203 is connected to a contact surface 208. Then, the coil wire 203 is wound around the second end of the coil wire 203 and connected to the second, still free, contact surface 208. Alternatively, the coil wire 203 can also be connected to the measuring and / or operating circuit via a connection board. Furthermore, alternatively, screws or pins may be provided to which the coil wire 203 is connected and which ensure an electrical connection of the coil wire 203 to the measuring and / or operating circuit.

[0054] Alternatively, the winding body 202 can have only one elevation 204 around which the coil wire 203 is wound. In this case, the elevation 204 can have an oval cross-section. This also allows an oval-shaped coil 205 to be formed. The coil wire 203 can be firmly bonded to the contacting device 206 or held in place by its own mechanical tension. The coil wire 203 is preferably a self-bonding wire (copper enamel wire) or a two-layer wire.

[0055] Once the coil wire 203 is wound and connected to the contact surfaces 208a, 208b, a coil 205 is formed, which still needs to be contacted with a connecting wire 214 (see Fig. 2d). For this purpose, the contacting device 206 has two contact surfaces 213a, 213b on a rear side 211, which are arranged offset from one another and which are in electrical contact with the contact surfaces 208a, 208b. The contact surfaces 213a, 213b can be formed as separate coatings made of conductive material. The connecting wire 214 is designed as a coaxial cable, with the inner conductor being contacted with the contact surfaces 213a and the outer conductor being contacted with the contact surface 213b. The winding body 202 also has a projection 215, which has a substantially rectangular basic shape. The projection 215 serves to relieve the strain on the connecting wire 214.This runs between the contacting device 206, in particular between the rear side 211 of the contacting device 206 and the projection 215. The projection 215 is designed such that a force acting on the bent connecting wire 214 is absorbed in the longitudinal direction and a tearing of the connection to the contact surfaces 213a, 213b is prevented. In the embodiment of Fig. 2d, the coil device 201 can be arranged in an opening in the carrier module body 22 or behind a separation of the carrier module body 22. Alternatively, the coil device 201 can also be arranged in a coil carrier (see Fig. 3), which is designed to protect the coil device 201 from environmental influences - such as leakage medium, cleaning medium, or collision with the measuring tube.

[0056] Fig. 3 shows a perspective view of the rear of the embodiment of the coil device from Fig. 2d in a coil carrier 216. The coil carrier 216 has a coil carrier receptacle 217 in which the coil device 201 from Fig. 2d is inserted. The coil carrier receptacle 217 is designed as a blind hole and at least partially takes on the shape of the coil device 201. The coil carrier 216 is arranged on the carrier module body 22 and is or can be fastened by means of at least one, in particular as shown by means of two coil device fastening means 222 at a variable distance from the measuring tube module arranged in the receptacle. The coil device fastening means 222 can be a screw, an adhesive or a wedge body. Alternatively, a positive connection between the coil carrier 216 and the receptacle module body 22 can be created by a forming process or

[0057] A clamping connection (e.g. by caulking or bending bending tabs) can be formed.

[0058] Fig. 4 shows a cross-sectional view of an obliquely sectioned illustration of an embodiment of Fig. 3. The carrier module body 22 has a continuous housing body opening 79 in which the coil carrier 216 is arranged. The coil carrier 216 is connected to the carrier module body 22 via at least one coil device fastening means 222 or, in the case shown, via two coil device fastening means 222. The distance of the coil 205 and the coil carrier 216 from the measuring tube and / or the inclination of the coil 205 and the coil carrier 216 relative to the measuring tube can be adjusted via the coil device fastening means 222. The coil carrier 216 has a receiving surface 218 in the coil carrier receptacle, on which the coil device 201, in particular the coil 205, in particular the contacting device of the coil, rests.The coil carrier 216 has a separating membrane 220, which separates the coil device 201, in particular the coil 205, from the measuring tube and the interior of the support module receptacle. Thus, the separating membrane 220 protects the coil device 201 from liquids that escape in the event of a leak in the measuring tube or that are used to clean the support module. The separating membrane 220 has a material thickness of 0.05 < d < 2 millimeters, in particular 0.1 < d < 1.5 millimeters, and preferably 0.2 < d < 1 millimeter. The coil carrier 216 is shaped such that a first section A can be arranged in a snug fit within the housing body opening 79, and a second section B—whose cross-sectional area is larger than the cross-sectional area of ​​the coil carrier 216 in the first section A—rests on the receiving module body 22 and thus limits the coil carrier 216 in its mounting direction. The second section B is designed as a stop.A hardened potting compound 219 is also located in the coil carrier receptacle. This is poured into the coil carrier receptacle 217 after the coil device 201 has been arranged in the coil carrier 216. There, it fills the free space between the coil device 201 and the coil carrier 216.

[0059] Fig. 5 shows a longitudinal sectional view through a housing body opening 579 with arranged coil device 501 and coil device fastening means 522. The coil carrier 516 has a coil 502 in a front section, which can be an excitation coil or a sensor coil. The housing body opening 579 for the coil device 501 has a helical housing body opening internal thread 555. Matching this, the coil carrier 516 has a coil carrier external thread 556. In the case shown, the coil carrier 516 is screwed into the housing body opening 579 so that it can be displaced in the longitudinal direction of the housing body opening 579. The position of the coil device 501 relative to a magnet arrangement or a permanent magnet on the measuring tube of the replaceable measuring tube module can be adjusted via a coil device fastening means 522.In the illustrated case, the coil device fastening means 522 is a screw with which the position of the coil device 501 can be blocked and secured. LIST OF REFERENCE SYMBOLS.

[0060] Coupler arrangement 1

[0061] Coriolis flowmeter 2

[0062] Measuring tube 3i

[0063] Measuring tube module 4

[0064] Fixing body arrangement 5

[0065] Coupler element 6

[0066] Vibration exciter 7

[0067] Vibration sensor 8

[0068] Magnet arrangement 9

[0069] Magnet 10

[0070] Leg 11

[0071] Measuring tube body 13

[0072] Measuring and / or operating circuit 15

[0073] Recording module 16

[0074] Carrier module body 22

[0075] Recording 23

[0076] Mounting surface 26

[0077] Tour 28

[0078] Excitation magnet 36

[0079] Excitation coil 37

[0080] Sensor magnet 38

[0081] Sensor coil 39

[0082] Housing body opening 79

[0083] Coil device 201

[0084] Winding body 202

[0085] Coil wire 203

[0086] Survey 204i

[0087] Coil 205

[0088] Contacting device 206

[0089] Coil opening 207

[0090] Contact surface 208

[0091] Front page 209

[0092] Deepening 210

[0093] Back 211

[0094] Front surface 212

[0095] Contact surface 213

[0096] Connecting wire 214 Projection 215

[0097] Coil carrier 216

[0098] Coil carrier holder 217

[0099] Mounting surface 218 Casting compound 219

[0100] Separation membrane 220

[0101] Hole 221

[0102] Coil device fastening means 222

[0103] Coil device 501 Coil 502

[0104] Coil carrier 516

[0105] Coil device fastening means 522

[0106] Housing body opening-internal thread 555

[0107] Housing body opening 579

Claims

PATENT CLAIMS 1. Modular Coriolis flowmeter (2) for determining a process variable of a flowable medium, comprising: - a measuring tube module (4), wherein the measuring tube module (4) comprises at least one measuring tube (3i) for guiding the medium; - a carrier module (16) with a receptacle (23) in a carrier module body (22) for receiving the measuring tube module (4), wherein the carrier module body (22) has at least one coil opening (79), wherein a coil device (201) is arranged in the at least one coil opening (79), wherein the coil device (201) comprises a winding body (202) and a coil wire (203), wherein the winding body (202) has at least one elevation (204), in particular at least partially hollow-cylindrical, for fastening the coil wire (203), wherein the coil wire (203) is at least partially wound around the at least one elevation (204a, 204b) to form a coil (205), - a measuring and / or operating circuit (15), wherein the measuring and / or operating circuit (15) is configured to apply an excitation signal to the at least one coil device (201) and / or to detect a sensor signal at the at least one coil device (201).

2. Coriolis flowmeter (2) according to claim 1, wherein the coil device (201) comprises a contacting device (206), wherein the contacting device (206) has at least one coil opening (207) through which the at least one elevation (204) extends, wherein the contacting device (206) has at least one contacting surface (208) for the coil wire (203), in particular on a front side (209), wherein the coil wire (203) is electrically connected to the contacting device (206), in particular to the contacting surface (208).

3. Coriolis flowmeter (2) according to claim 1 or 2, wherein the winding body (202) has two elevations (204a, 204b), wherein the contacting device (206) has two coil openings (207a, 207b), wherein a respective elevation (204a, 204b) extends through the two coil openings (207a, 207b), wherein the coil wire (203) is wound around the two elevations (204a, 204b).

4. Coriolis flowmeter (2) according to claim 3, wherein the two elevations (204a, 204b) are oriented such that the coil wire (203) is wound in an oval shape.

5. Coriolis flowmeter (2) according to one of the preceding claims, wherein in a region around the at least one elevation (204a, 204b), in particular around the two elevations (204a, 204b), there is a recess (210) in the winding body (202).

6. Coriolis flowmeter (2) according to one of claims 2 to 5, wherein the contacting device (206) is planar at least on its rear side (211) and rests with the rear side (211) on a front surface (212) of the winding body (202).

7. Coriolis flowmeter (2) according to one of claims 2 to 6, wherein the contacting device (206) has at least one contacting surface (213) for a connecting wire (214) on a rear side (211).

8. Coriolis flowmeter (2) according to claim 7, wherein the connecting wire (214) comprises a coaxial cable with which the coil device (201) is in communication with the measuring and / or operating circuit (15).

9. Coriolis flowmeter (2) according to claim 7 or 8, wherein the winding body (202) has a projection (215) which is designed such that it acts as a strain relief on the connecting wire (214).

10. Coriolis flowmeter (2) according to one of claims 2 to 9, wherein the coil device (201) comprises a coil carrier (216), wherein the coil (205) is arranged in a coil carrier receptacle (217) such that the contacting device (206) rests on a receiving surface (218) of the coil carrier (216).

11. Coriolis flowmeter (2) according to claim 10, wherein a cured potting compound (219) is present in the coil carrier receptacle (217).

12. Coriolis flowmeter (2) according to one of the preceding claims, wherein the coil carrier (216) has a separating membrane (220) which separates the coil wire (203) from the receptacle (23) of the carrier module body (22), wherein the separating membrane (220) has a material thickness of 0.05 < d < 2 millimeters, in particular 0.1 < d < 1.5 millimeters and preferably 0.2 < d < 1 millimeter.

13. Coriolis flowmeter (2) according to one of the preceding claims, wherein the measuring tube module (4) is or can be connected in a mechanically detachable manner to the carrier module (16), in particular to the carrier module body (22).

14. Coriolis flowmeter (2) according to one of the preceding claims, wherein the carrier module (15) has a coil device fastening means (222) which is designed to fasten the coil device (201) in the at least one coil opening (79) at a variable distance from the measuring tube module (4) arranged in the receptacle (23).

15. Method for producing a coil device (201) for a, in particular modular, Coriolis flowmeter (2), comprising the method steps: - Arranging a contacting device (206) on a winding body (202) for fastening and / or electrically contacting a coil wire (203), wherein the winding body (202) has at least one elevation (204a, 204b), wherein the contacting device (206) has at least one coil opening (207a, 207b), wherein the at least one elevation (204a, 204b) is passed through the at least one coil opening (207a, 207b); - winding the coil wire (203) around the at least one elevation (204a, 204b) to form a coil (205), wherein the winding body (202) takes on the role of a winding mandrel; and - Connecting the coil wire (203) to at least one contact surface (208) of the contacting device (206).

16. The method according to claim 15, wherein a hole (221) extends through the at least one elevation (204a, 204b), in particular in each case, for receiving a counter-disk, wherein the counter-disk is arranged on the winding body (202) when the coil wire (203) is wound up.

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