Coil apparatus of an oscillation sensor or of an oscillation exciter, measuring transducer and measuring instrument

Patent metadata

Field	Value
Publication number	US-11971283-B2
Application number	US-201917266967-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Aug 8, 2018
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

The present disclosure relates to a coil apparatus of an oscillation sensor or exciter of a measuring transducer or a measuring instrument for measuring a density or a mass flow of a medium flowing through a measuring tube, comprising: a circuit board, at least one coil adapted for registering or producing a time varying magnetic field, wherein the at least one coil has a first coil end and a second coil end, wherein the coil apparatus has four contacting elements, wherein the circuit board has a cutting plane extending perpendicularly to the faces, wherein the cutting plane divides the faces into a first side and a second side, wherein one contacting element of a pair of contacting elements is arranged on the first side, and wherein one contacting element of a pair of contacting elements is arranged on the second side.

First claim

The invention claimed is:

1. A coil apparatus of an oscillation sensor or oscillation exciter of a measuring transducer or a measuring instrument for measuring a density or a mass flow of a medium flowing through at least one measuring tube of the measuring transducer, or measuring instrument, comprising:
a circuit board having at least one circuit board layer, wherein each circuit board layer has a first face and a second face plane parallel to the first face,
at least one coil adapted for registering or producing a time varying magnetic field, wherein the coil is embodied at least sectionally using an electrically conductive trace, wherein the coil is arranged on the first face or second face of a circuit board layer,
wherein the at least one coil has, in each case, a first coil end and, in each case, a second coil end, wherein the coil apparatus has four contacting elements, wherein a first pair of contacting elements is electrically connected with a first coil end via a first connection, and wherein a second pair of contacting elements is electrically connected with a second coil end via a second connection,
wherein the circuit board has a cutting plane extending perpendicularly to the faces, wherein the cutting plane divides the faces, in each case, into a first side and a second side, wherein, in each case, one contacting element of a pair of contacting elements is arranged on the first side, and wherein, in each case, one contacting element of a pair of contacting elements is arranged on the second side,
wherein the coil apparatus is connectable, in each case, using at least one contacting element of the first pair and the second pair to an electronic measuring/operating circuit of the measuring instrument.

2. The coil apparatus of claim 1 , wherein the circuit board includes a plurality of circuit board layers, which circuit board layers are stacked and connected via faces with neighboring circuit board layers.

3. The coil apparatus of claim 1 , wherein the contacting elements are arranged either on at least one, first face or on at least one, second face.

4. The coil apparatus of claim 1 , wherein the contacting elements are arranged symmetrically relative to the cutting plane.

5. The coil apparatus of claim 2 , wherein the circuit board has a total number N total of circuit board layers, wherein N total is greater than 1,
wherein the circuit board has at least one notch, which is embodied by at least one slot of an associated, contiguous group of circuit board layers,
wherein the number of circuit board layers belonging to the associated group is less than N total ,
wherein a contacting element belonging to a notch is arranged on a contacting circuit board layer, which borders on a corresponding group,
wherein the contacting element at least partially forms a floor of the notch,
wherein the circuit board layer carrying the contacting element is not covered by an adjoining circuit board layer at least in the region of the contacting element.

6. The coil apparatus of claim 5 ,
wherein a plurality of circuit board layers have, in each case, a coil with, in each case, a first coil end and, in each case, a second coil end,
wherein the coils are interconnected serially or in parallel with one another,
wherein the coils of different circuit board layers produce constructively interfering magnetic fields upon applying an electrical voltage between via a first connection and via a second connection.

7. The coil apparatus of claim 6 , wherein the first coil ends are connected by means of via a first connection, and wherein the second coil ends are connected by means of via a second connection.

8. The coil apparatus of claim 6 , wherein adjoining coils are connected, in each case, by means of one of their coil ends, wherein, in each case, an end of outer coils is connected with, in each case, a contacting element.

9. A measuring transducer of a measuring instrument for registering a mass flow or a density of a medium flowing through at least one measuring tube of the measuring transducer, comprising:
the at least one measuring tube having an inlet and an outlet and adapted to convey the medium between inlet and outlet;
at least one oscillation exciter, which is adapted to excite the at least one measuring tube to execute oscillations;
at least two oscillation sensors, which are adapted to register deflections of oscillations of at least one measuring tube;
wherein at least one oscillation exciter as well as the oscillation sensors have, in each case, a coil apparatus with, in each case, at least one coil, as well as, in each case, a magnet apparatus,
wherein the magnet apparatus and the coil apparatus are movable relatively to one another,
wherein the magnet apparatus and the coil apparatus of an oscillation exciter, or oscillation sensor are adapted to interact by means of magnetic fields,
wherein the measuring transducer has a support body, which is adapted to hold the measuring tube,
wherein the oscillation sensors comprise, in each case, a coil apparatus,
wherein the coil apparatus includes:
at least one coil adapted for registering or producing a time varying magnetic field, wherein the coil is embodied at least sectionally using an electrically conductive trace, wherein the coil is arranged on the first face or second face of a circuit board layer,
wherein the at least one coil has, in each case, a first coil end and, in each case, a second coil end, wherein the coil apparatus has four contacting elements, wherein a first pair of contacting elements is electrically connected with a first coil end via a first connection, and wherein a second pair of contacting elements is electrically connected with a second coil end via a second connection,
wherein the circuit board has a cutting plane extending perpendicularly to the faces,

wherein the cutting plane divides the faces, in each case, into a first side and a second side,
wherein, in each case, one contacting element of a pair of contacting elements is arranged on the first side, and wherein, in each case, one contacting element of a pair of contacting elements is arranged on the second side,
wherein the coil apparatus is connectable, in each case, using at least one contacting element of the first pair and the second pair to an electronic measuring/operating circuit of the measuring instrument.

10. The measuring transducer of claim 9 , wherein the coil apparatuses of the oscillation sensors are secured to the support body.

11. The measuring transducer of claim 9 , wherein a cross sectional plane divides the at least one measuring tube into an inlet side section and an outlet side section, wherein an inlet side coil apparatus and an outlet side coil apparatus with reference to the contacting elements are arranged mirror symmetrically about the cross sectional plane.

12. The measuring transducer of claim 9 , wherein the measuring transducer has two manifolds, wherein a first manifold in an upstream directed side of the measuring transducer is adapted to receive a medium inflowing into the measuring transducer from a pipeline and to distribute such to the inlet of the at least one measuring tube, wherein a second manifold is adapted to receive medium draining from the at least one measuring tube and to guide such back into the pipeline.

13. The measuring transducer of claim 9 , wherein the measuring transducer includes two process connections, which are adapted to connect the measuring transducer with a pipeline.

14. The measuring transducer of claim 9 , wherein a difference of an electrical DC resistance of the coil apparatuses of different oscillation s

Assignees

• Flowtec Ag

Inventors

• Schwenter Benjamin
• Hollinger Claude
• Werner Marc

Classifications

• G01F1/8422 Primary

  exciters · CPC title

• G01F1/8427

  detectors · CPC title

• G01N9/002

  using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis (G01N9/34 takes precedence) · CPC title

• H01F27/2804

  Printed windings · CPC title

• G01N2009/006

  vibrating tube, tuning fork · CPC title