Method and apparatus for pressure measurement using magnetic property
First Claim
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1. A pressure sensor, comprising:
- a sensor body having a magnetic property comprising magnetostriction or permeability of the sensor body 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.
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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.
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Citations
29 Claims
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1. A pressure sensor, comprising:
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a sensor body having a magnetic property comprising magnetostriction or permeability of the sensor body 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of measuring a pressure of the process fluid, comprising:
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receiving the pressure of the process fluid in a sensor body, the sensor body having a magnetic property comprising magnetostriction or permeability of the sensor body 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. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification