Dual purpose pressure sensor

Details Dual purpose pressure sensor Dual purpose pressure sensor

1978-07-19

1979-08-28

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

73115, 73753, 123 32EA, G01L 700, G01M 1500

Patent

active

041656504

ABSTRACT:
A single pressure sensor is caused to provide a pressure measurement at two separate pressure regions through the use of a differential pressure switch whose switch over point occurs when the two regions are at a fixed pressure differential or offset. The sensor is connected to sense a first region with a sensor output signal being compared to a signal related to the count in a counter. Upon switch over the counter is actuated to make a signal equal to the sensor output signal. The counter signal, compensated for the offset, is related to the pressure at the second region.

REFERENCES:
patent: 3286528 (1966-11-01), Jullien-Davin
patent: 3382470 (1968-05-01), Kvistad
patent: 3738339 (1973-06-01), Huntzinger et al.
patent: 3750474 (1973-08-01), Pollock
patent: 3845348 (1974-10-01), Riley
patent: 4038532 (1977-07-01), Burris et al.

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