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US 7,401,522 B2Granted
Pressure sensor using compressible sensor body
AssigneeRosemount Inc.
InventorsDavid A. Broden, Robert C. Hedtke
Life of this patent
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Abstract
A pressure sensor including a deformable sensor body formed of a compressible material. A deformation sensor is embedded in the deformable sensor body and has an electrical property which changes in response to deformation of the deformable sensor body. Electrical connections which extend from outside the deformable sensor body to the embedded deformation sensor to provide an indication of an applied line pressure or differential pressure.
Claims20
A pressure sensor, comprising;
- a deformable sensor body formed of a compressible material;
- first and second pressure connections to the deformable sensor body configured to receive first and second pressures;
- differential pressure electrical connections extending from the deformable sensor body which provide an electrical property which changes based upon a pressure differential between the first and second pressures;
- an embedded deformation sensor embedded in the deformable sensor body having an electrical property which changes in response to deformation of the deformable sensor body;
- and
- electrical connections which extend from outside the deformable sensor body to the embedded deformation sensor.
3 more elements
A method of measuring pressure, comprising:
- determining differential pressure based upon deflection of a diaphragm carried in a deformable sensor body;
- and
- determining line pressure based upon deformation of the deformable sensor body sensed with a deformation sensor.
Dependencies are inferred from the claim text.