Pressure compensated differential pressure sensor and method
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United States of America Patent
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-
Jul 1, 1986
Grant Date -
N/A
app pub date -
Mar 24, 1983
filing date -
Mar 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A differential pressure sensor senses a difference in pressure between a first input (low) pressure or 'reference pressure' and a second input (high) pressure and provides a differential sensor signal representative of the difference in pressure. The reference pressure is sensed by a reference pressure sensor which provides a reference signal representative of the reference pressure. The differential sensor signal and the reference signal are provided to a correction circuit. The correction circuit, which is preferably a digital computer, adjusts the reference signal and provides an improved output signal as a function of the differential sensor signal and the adjusted reference signal.
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