Line pressure compensator for a pressure transducer

Details Line pressure compensator for a pressure transducer Line pressure compensator for a pressure transducer

1991-03-08

1992-11-17

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

73718, 73724, 361283, G01L 708, G01L 912, G01L 1904

Patent

active

051633264

ABSTRACT:
In a two wire transmitter, a capacitive sensor senses differential pressure and provides a differential pressure signal based on the differential pressure sensed. The differential pressure signal varies with variations in static pressure. A capacitive compensator has a capacitive value substantially unaffected by variations in static pressure, and is coupled to the capacitive sensor to compensate the differential pressure signal for variations due to variations in the static pressure.

REFERENCES:
patent: 4370890 (1983-02-01), Frick
patent: 4791352 (1988-12-01), Frick et al.
patent: 4878012 (1989-10-01), Schulte et al.

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