Torque tube digital differential pressure sensor
US4651569A · kind A · utility
7Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1985 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | May 1, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital differential pressure sensor with relatively low sensitivity to common mode line pressure errors. The sensor includes an airtight enclosure having a pair of pressure ports through which pressures are coupled to opposite sides of a pressure-sensing diaphragm, bellows, or Bourdon tube. The pressure-sensing elements generate torques which are transmitted by a shaft to stress-sensitive resonators which are isolated from the torque-producing elements by a sealed, flexible tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.