Differential pressure transmitter with redundant sensors
US9200932B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2012 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Sep 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for measuring flow of process fluid through process piping, includes a flow restriction in the process piping generating a differential pressure between an upstream side of the restriction and a downstream side of the restriction. The differential pressure is related to flow of the process fluid. First and second upstream pressure transmitters are coupled to the process piping on the upstream side of the flow restriction and measure respective first and second upstream pressures. First and second downstream pressure transmitters are coupled to the process piping on the downstream side of the flow restriction and measure respective first and second downstream pressure of the process fluid. Flow rate of the process fluid is calculated based upon at least one upstream pressure and one downstream pressure. Further, degradation in at least one of the pressure transmitters is identified based upon at least two pressure measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.