Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1993-05-05
1994-09-06
Chilcot, Jr., Richard E.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73766, G01L 1904, G01B 716
Patent
active
053437551
ABSTRACT:
A strain gage pressure sensor having a resistive bridge circuit from which is measured both the applied pressure and the temperature of the pressure sensor. A constant voltage is provided across the bridge circuit such that any temperature caused changes in the resistance of the bridge circuit are reflected in the flow of a bridge current through the bridge circuit. A sense resistor is electrically coupled to the bridge circuit such that any change in the bridge current causes a change in the voltage drop across the sense resistor. The voltage drop and the pressure output signal are digitized and suitably processed resulting in a highly accurate, corrected pressure output for use with suitable pressure instrumentation.
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Chilcot Jr. Richard E.
Oen William L.
Rosemount Inc.
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