Device for measuring gas concentration
US6710347B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/1218
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for detecting at least one component gas in a sample includes a radiation source for providing radiation along an optical path in a pre-selected spectral band having at least one absorption line of the component gas to be detected and an optical detector for detecting radiation at the optical path. A sample chamber is positioned in the optical path between the source and the optical detector to contain a quantity of a sample gas. At least one gas cell enclosing an amount of the gas to be detected is fixedly positioned in the optical path in series with the gas chamber. A mathematical relationship is determined between the detected radiation and the concentration of a sample gas filling the sample chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.