Pressure compensated differential pressure sensor and method
US4598381A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1983 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Mar 24, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential pressure sensor senses a difference in pressure between a first input (low) pressure or "reference pressure" and a second input (high) pressure and provides a differential sensor signal representative of the difference in pressure. The reference pressure is sensed by a reference pressure sensor which provides a reference signal representative of the reference pressure. The differential sensor signal and the reference signal are provided to a correction circuit. The correction circuit, which is preferably a digital computer, adjusts the reference signal and provides an improved output signal as a function of the differential sensor signal and the adjusted reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.