Gas pressure sensor with temperature compensation

Details Gas pressure sensor with temperature compensation Gas pressure sensor with temperature compensation

2009-04-14

2010-06-22

Allen, Andre J (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S716000, C073S718000

Reexamination Certificate

active

07739916

ABSTRACT:
A pressure sensor for sensing a fluid pressure comprising: a first chamber including a first conductive membrane, wherein a fluid is sealed within the first chamber at a reference pressure such that the first conductive membrane deflects from pressure differences between the reference and the fluid pressure; a second chamber including a second conductive membrane sealed from the fluid pressure, wherein the second membrane deflects in response to a change in temperature which the pressure sensor is exposed thereto; and a circuit in electrical communication with the first and second conductive membrane, the circuit being configured to obtain a first and second signal from the first and second conductive membranes respectively, the first and second signals being indicative of the deflection of the first and second conductive membranes, wherein the circuit adjusts the first signal by the second signal to generate an output signal indicative of the fluid pressure.

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