Pressure sensor
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United States of America Patent
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Aug 24, 2010
Grant Date -
May 14, 2009
app pub date -
Nov 8, 2007
filing date -
Nov 8, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A pressure transmitter is provided. The pressure transmitter includes a pressure sensor including a pair of process fluid pressure ports each having a deflectable diaphragm. A first variable capacitor is disposed within the pressure sensor and has a capacitance that varies with differential pressure between the process fluid ports. A second variable capacitor is disposed within the pressure sensor and has a capacitance that varies with line pressure.
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