Infrared radiation gas analyzer
US4499378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Mar 8, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/35
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared radiation gas analyzer for determining the concentration of an ingredient in a sample gas has a sample gas container for containing a sample gas at a temperature at which the ingredient the concentration of which is to be determined will emit infrared radiation in a range characteristic of the ingredient and a window for allowing the infrared radiation to escape from the container. An optical chopper is positioned outside the container for interrupting the radiation escaping from the container. A filter is positioned in the path of the radiation escaping from the container and transmits only radiation in the range. An infrared radiation detector is positioned for receiving the radiation passed by the filter and emitting a signal representative of the radiation received by the detector and which is representative of the concentration of the ingredient the concentration of which is to be determined in the sample gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.