High temperature gage pressure sensor
US8528409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2011 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Mar 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/0636
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensor for measuring gage pressure in relatively high temperature environments is provided. The sensor includes a housing that is configured to couple to a source of pressurized fluid and has an inner surface that defines a inner volume. A pressure sensitive device is coupled to the sensor housing and is configured define a reference chamber in at least a portion of the inner volume. The reference chamber is fluidly isolated from the source of pressurized fluid. An atmospheric reference port is formed in the sensor housing and is in fluid communication with the reference chamber for maintaining the reference chamber at ambient atmospheric pressure. A porous metallic plug is disposed within the atmospheric reference pressure port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.