Countercurrent sniffing leak detector
US5907092A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Jun 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/207
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a countercurrent sniffing leak detector (1) with a mass spectrometer (3) as the detector, with a high-vacuum pump (4) or high-vacuum pump stage (14) through which flows a test gas in countercurrent, with a sniffing hose (7) connected to the outlet side of the high-vacuum pump, respectively high-vacuum pump stage, and with a choke maintaining the pressure difference between the atmospheric pressure in the inlet region (8) of the sniffing hose (7) and the pressure in its outlet region (9); to improve the sensitivity and response time it is suggested that at least one segment of the sniffing hose (7), preferably the entire sniffing hose (7), is dimensioned such that the desired choking is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.