Elongated pressure sensor for a pressure transmitter
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United States of America Patent
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-
Jul 18, 2000
Issued Date -
N/A
app pub date -
Mar 3, 1997
filing date -
Feb 28, 1995
priority date (Note) -
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status (Latency Note)
Importance
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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