Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1995-11-17
1997-01-21
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
Diaphragm
73756, G01L 900
Patent
active
055961479
ABSTRACT:
A pressure transmitter comprises a first housing having a first and second diaphragm for receiving a first and second process fluid under a first and second pressure, respectively. The first and second diaphragm is deflected in response to the first and second pressure of the process fluid. A second housing includes a printed wire board. A first and second capillary tube is included, the first capillary tube being operatively coupled to the first diaphragm and the second capillary tube being operatively coupled to the second diaphragm, each corresponding capillary tube having an internal fluid therein. A sensor package, having a sensor element, is mounted internally within the second housing, and is coupled to the first and second capillary tubes such that the sensor element provides a first signal which is coupled to electrical circuit components mounted on the printed wire board to output a signal representative of the differential pressure of the process fluid.
REFERENCES:
patent: 4244226 (1981-01-01), Green et al.
patent: 4655074 (1987-04-01), Robertson, Jr. et al.
patent: 4823604 (1989-04-01), Silverwater
patent: 4879912 (1989-11-01), Suckow
patent: 5209258 (1993-05-01), Sharp et al.
Lane, III Charles E.
Mathias Milton W.
Wilda Douglas W.
Chilcot Richard
Oen William L.
Sapelli Arthur A.
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