Wet-to-wet pressure sensing assembly
US6543291B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2000 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jan 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L13/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wet-to-wet differential pressure sensing device including: a housing including first and second pressure receiving ports; a doubly stopped pressure sensor secured within the housing between the first and second ports; a first isolation diaphragm secured within the housing between the first port and the sensor; a second isolation diaphragm secured within the housing between the second port and the sensor; a first filling tube for introducing oil into a first cavity formed between the first diaphragm and the housing; and, a second filling tube for introducing oil into a second cavity formed between the second diaphragm and the housing; wherein the first and second filling tubes are accessible through a side wall of the housing being interposed between the first and second ports and the sensor and header are secured within the housing such that they are offset with respect to a center of the first diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.