Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1995-02-28
1997-06-10
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
Diaphragm
73718, 3612834, G01L 912
Patent
active
056378025
ABSTRACT:
A transmitter in a process control system transmits a pressure over a process control loop. The transmitter includes I/O circuitry, compensation circuitry and an absolute pressure sensor. The I/O circuitry transmits information over the process control loop. Compensation circuitry receives a pressure related signal and responsively controls the I/O circuitry to transmit pressure information on the loop. The absolute pressure sensor includes a cavity which deforms as the sensor deflects in response to an applied pressure. A sensor in the cavity provides the pressure related signal to the compensation circuitry in response to the deformation.
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Frick Roger L.
Louwagie Bennett L.
Toy Adrian C.
Chilcot Richard
Felber Joseph L.
Rosemount Inc.
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