Infrared ray gas analyzing apparatus
US4180733A · kind A · utility
5Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jun 2, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/37
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared type gas analyzer having measuring and reference cells is equipped with alternately switchable valves so that the cells can alternate acting as the measuring and reference cells. The output of the detector is stored for each configuration and these outputs are subtracted from one another to provide the output of the analyzer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.