Pressure sensor with improved strain gauge
US10557770B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus senses a pressure of a fluid from a fluid medium. The apparatus has a port body with a peripheral wall surrounding an interior channel. The interior channel extends between a diaphragm on the port body and an opening for receiving the fluid. A strain gauge is disposed on the port body. The strain gauge has two or more resistors connected between input/output pads and ground pads. The resistors are spaced substantially equidistant from the ground pad to reduce mobile ion migration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.