The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2011
Filed:
May. 27, 2009
Paul C. Sundet, Savage, MN (US);
Mark C. Fandrey, Eden Prairie, MN (US);
Paul C. Sundet, Savage, MN (US);
Mark C. Fandrey, Eden Prairie, MN (US);
Rosemount Inc., Eden Prairie, MN (US);
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.