Condition detection of pressure transmitter diaphragm
US11609141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Aug 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A material property sensor for a pressure transmitter comprises a sensing pattern immersed in a fill fluid. The pressure transmitter comprises a diaphragm configured for contact with a process fluid at an exterior surface of the diaphragm. The pressure transmitter further comprises a pressure sensor configured for sensing a pressure of the process fluid on the diaphragm. The pressure sensor and the diaphragm define a cavity within which the fill fluid is disposed such that the diaphragm of the pressure sensor is in contact with the fill fluid at an interior surface of the diaphragm. The sensing pattern is immersed in the fill fluid within the cavity and configured to measure an electrical property of the fill fluid at an initial time and at one or more subsequent times during operation of the pressure transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.