Collocated sensor for a vibrating fluid meter

Patent metadata

Field	Value
Publication number	US-9851242-B2
Application number	US-201114349148-A
Country	US
Kind code	B2
Filing date	Oct 26, 2011
Priority date	Oct 26, 2011
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A combined driver and pick-off sensor component ( 200, 300 ) for a vibrating meter is provided. The combined driver and pick-off sensor component ( 200, 300 ) includes a magnet portion ( 104 B) with at least a first magnet ( 211 ). The combined driver and pick-off sensor component ( 200, 300 ) further includes a coil portion ( 204 A, 304 A) receiving at least a portion of the first magnet ( 211 ). The coil portion ( 204 A, 304 A) includes a coil bobbin ( 220 ), a driver wire ( 221 ) wound around the coil bobbin ( 220 ), and a pick-off wire ( 222 ) wound around the coil bobbin ( 220 ).

First claim

We claim:

1. A combined driver and pick-off sensor component ( 200 , 300 ) for a vibrating meter, comprising:
a magnet portion ( 104 B) comprising at least a first magnet ( 211 );
a coil portion ( 204 A, 304 A) including:
a coil bobbin ( 220 );
a driver wire ( 221 ) wound around the coil bobbin ( 220 ); and
a pick-off wire ( 222 ) wound around the coil bobbin ( 220 ), wherein the driver wire ( 221 ) and the pick-off wire ( 222 ) are separate and distinct.

2. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 1 , wherein the pick-off wire ( 222 ) is wound on top of at least a portion of the driver wire ( 221 ).

3. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 1 , wherein the coil bobbin ( 220 ) comprises a first winding area ( 322 ) for receiving the driver wire ( 221 ) and a second winding area ( 322 ′) for receiving the pick-off wire ( 222 ).

4. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 3 , wherein the first and second winding areas ( 322 , 322 ′) are spaced apart from one another.

5. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 4 , further comprising a flux directing ring ( 330 ) positioned between the first and second winding areas ( 322 , 322 ′).

6. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 1 , wherein the coil bobbin ( 220 ) comprises a magnet receiving portion ( 220 ′) for receiving at least a portion of the magnet ( 211 ).

7. The combined driver and pick-off sensor component ( 200 , 300 ) of claim 1 , wherein the first magnet ( 211 ) corresponds to the driver wire ( 221 ) and the magnet portion ( 104 B) further comprises a second magnet ( 311 ) coupled to the first magnet ( 211 ) corresponding to the pick-off wire ( 222 ).

8. A vibrating meter ( 400 ), comprising:
a meter electronics ( 20 );
a sensor assembly ( 40 ) in electrical communication with the meter electronics ( 20 ) and including:
one or more flow conduits ( 103 A, 103 B); and
one or more combined driver and pick-off sensor components ( 200 , 300 ) coupled to at least one of the one or more flow conduits ( 103 A, 103 B) with each of the combined driver and pick-off sensor components comprising a magnet portion ( 104 B) and a coil portion ( 204 A), wherein the coil portion ( 204 A) includes a coil bobbin ( 220 ), a driver wire ( 221 ) wound around the coil bobbin ( 220 ), and a pick-off wire ( 222 ) wound around the coil bobbin ( 220 ), wherein the driver wire ( 221 ) and the pick-off wire ( 222 ) are separate and distinct.

9. The vibrating meter ( 400 ) of claim 8 , further comprising a first electrical lead ( 411 ) coupled to the driver wire ( 221 ) and in electrical communication with the meter electronics ( 20 ) for communicating a drive signal and a second electrical lead ( 411 ′) coupled to the pick-off wire ( 222 ) and in electrical communication with the meter electronics ( 20 ) for communicating a pick-off signal.

10. The vibrating meter ( 400 ) of claim 8 , wherein the magnet portion ( 104 B) comprises at least a first magnet ( 211 ).

11. The vibrating meter ( 400 ) of claim 10 , wherein the coil bobbin ( 220 ) comprises a magnet receiving portion ( 220 ′) for receiving at least a portion of the first magnet ( 211 ).

12. The vibrating meter ( 400 ) of claim 8 , wherein the pick-off wire ( 222 ) is wound on top of at least a portion of the driver wire ( 221 ).

13. The vibrating meter ( 400 ) of claim 8 , wherein the coil bobbin ( 220 ) comprises a first winding area ( 322 ) for receiving the driver wire ( 221 ) and a second winding area ( 322 ′) for receiving the pick-off wire ( 222 ).

14. The vibrating meter ( 400 ) of claim 13 , wherein the first and second winding areas ( 322 , 322 ′) are spaced apart from one another.

15. The vibrating meter ( 400 ) of claim 14 , further comprising a flux directing ring ( 330 ) positioned between the first and second winding areas ( 322 , 322 ′).

16. A method for forming a vibrating meter including a sensor assembly with one or more flow conduits, comprising steps of:
winding a driver wire around a coil bobbin;
winding a pick-off wire around the coil bobbin, wherein the driver wire and the pick-off wire and separate and distinct;
coupling the coil bobbin to one of the one or more flow conduits;
electrically coupling the driver wire to a meter electronics for communicating a drive signal; and
electrically coupling the pick-off wire to the meter electronics for communicating a pick-off signal.

17. The method of claim 16 , further comprising a step of coupling a magnet to a second flow conduit of the one or more flow conduits such that the coil bobbin receives at least a portion of the magnet.

18. The method of claim 16 , wherein the step of winding the pick-off wire comprises winding the pick-off wire on top of the driver wire.

19. The method of claim 16 , wherein the step of winding the driver and pick-off wires comprises winding the driver wire in a first winding area and winding the pick-off wire in a second winding area spaced from the first winding area.

20. The method of claim 19 , further comprising a step of coupling a flux directing ring to the coil bobbin between the first and second winding areas.

Assignees

• Larsen Christopher George
• Rensing Matthew Joseph
• Nilsen Amy Mai
• Loving Roger Scott
• Micro Motion Inc

Inventors

• Larsen Christopher George
• Rensing Matthew Joseph
• Nilsen Amy Mai
• Loving Roger Scott

Classifications

• Y10T29/49004

  including measuring or testing of device or component part · CPC title

• G01F1/8427

  detectors · CPC title

• G01H3/00 Primary

  Measuring {characteristics of} vibrations by using a detector in a fluid (G01H7/00, G01H9/00, G01H11/00 take precedence) · CPC title

• G01F1/8477

  with multiple measuring conduits · CPC title

• G01F1/8422 Primary

  exciters · CPC title