Device and method for detecting the presence of test gas
US7597013B2 · kind B2 · utility
1Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Jan 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/202
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and a method provide a detection of a presence of a test gas. The device comprises a vacuum chamber connected to a vacuum pump equipped with an electronic power supply unit. At least one portion of the chamber is separated from a surrounding outside environment by a membrane selectively permeable to the test gas. A gas flow from the outside environment is guided forcefully over the surface of the membrane via a flow conveyor, which comprises an inlet duct, a diffuser and an outlet duct. The presence of any test gas is detected by the changes in the electrical current to the vacuum pump provided by the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.