Matching back pressures on differential oil-filled diaphragms
US9739677B2 · kind B2 · utility
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2References
20Claims
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Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Exemplary embodiments of the present invention provide a differential pressure transducer that comprises first and second diaphragms of different configurations, i.e., different diameters and/or thicknesses. The pressure transducer provides more versatility over prior art designs as the diaphragms can be of different configurations yet still maintain substantially similar back pressures. Therefore, the errors commonly associated with back pressures are eliminated because the back pressures from the diaphragms ultimately cancel out in the sensor's differential pressure measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.