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Title:
多変量圧力トランスミッターの改善された温度補償
Document Type and Number:
Japanese Patent JP2011521270
Kind Code:
A
Abstract:
A multivariable process fluid pressure transmitter includes an electronics module and a sensor module. The sensor module is coupled to the electronics module. A process fluid temperature sensor is coupled to the process fluid pressure transmitter. A differential pressure sensor is disposed within the sensor module and is operably coupled to a plurality of process fluid pressure inlets. A static pressure sensor is also disposed within the sensor module and is operably coupled to at least one of the process fluid pressure inlets. A first temperature sensor is disposed within the sensor module and is configured to provide an indication of a temperature of the differential pressure sensor. A second temperature sensor is disposed within the sensor module and is configured to provide an indication of a temperature of the static pressure sensor. Measurement circuitry is operably coupled to the differential pressure sensor, the static pressure sensor, and the first and second temperature sensors. A processor is coupled to the measurement circuitry and is configured to provide a compensated differential pressure output based on a measurement of the differential pressure sensor and the first temperature sensor, and to provide a compensated static pressure output based on a measurement of the static pressure sensor and the second temperature sensor.

Inventors:
Foundry, Mark Sea
Sandet, Paul Sea
Application Number:
JP2011511779A
Publication Date:
July 21, 2011
Filing Date:
May 27, 2009
Export Citation:
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Assignee:
Rosemount Incorporated
International Classes:
G01L19/04; G01L7/00; G01L13/00
Domestic Patent References:
JP2004020524A2004-01-22
JP3047104U1998-03-31
JP2006519997A2006-08-31
JPH0579871A1993-03-30
JPH04307331A1992-10-29
JP2008002994A2008-01-10
JPH11509326A1999-08-17
Attorney, Agent or Firm:
Hajime Tsukuni
Yasuo Yanagibashi