Pressure sensor package for reducing stress-induced measurement error
US5438877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0073
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensor package (10) has a sensor body (12) for containing a pressure sensor. An elongated stem (14) has a first end connected to the sensor body (12), and a connector (24, 26) is disposed on a second end of the stem (14) for fixedly mounting the stem (14) to a mounting base (40), which is connected to, for example, a fuel tank (52). An annular sealing surface (28) is disposed on the first end of the stem (14) for pressing against a compressible seal (44) when the stem (14) is mounted to the mounting base (40), and an orifice (18) is disposed at the second end of the stem (14). The orifice 18 is connected to the pressure sensor by a passage (20, 22) through the stem body. The connector (24, 26) is spaced a sufficient distance from the sensor body (12) to substantially reduce error-inducing stresses on the pressure sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.