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US 2010/0132473 A1Published application
Method and apparatus for pressure measurement using magnetic property
AssigneeRosemount Inc.
InventorCharles R. Willcox
Life of this patent
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Abstract
A pressure sensor includes a sensor body which is arranged to couple to a process pressure. The sensor body has a magnetic property which changes as a function of pressure applied by a process fluid. A sensor is coupled to the sensor body and is configured to measure pressure of fluid in the sensor body as a function of a change of magnetic property of the sensor body.
Claims29
A pressure sensor, comprising:
- a sensor body having a magnetic property which changes as a function of an applied pressure of a process fluid;
- a pressure coupling adapted to couple the sensor body to a process fluid;
- and
- circuitry configured to measure the magnetic property of the sensor body and provide an output indicative of the pressure as a function of the magnetic property.
1 more element
A method of measuring a pressure of the process fluid, comprising:
- receiving the pressure of the process fluid in a sensor body, the sensor body having a magnetic property which changes as a function of the applied pressure;
- sensing a change in the magnetic property of the sensor body, and
- providing an output indicative of the pressure based upon a sensed change of the magnetic property.
Dependencies are inferred from the claim text.