Gas sampling valve
US4869094A · kind A · utility
8Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Jul 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/2252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sampling valve is provided with a small opening for gas sampling and a gas flow channel communicating therewith and is adapted to sample a gas in the gas flow passage by operating a valve for opening and closing the small opening, wherein at least one detector for detecting the concentration of oxygen or combustion gas is disposed in the gas flow passage, whereby the concentration of oxygen, an air excess ratio, the combustion efficiency, or the like can be measured without using a separate analyzer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.