Infrared ray gas analyzing apparatus
USRE31438E · kind E · reissue
1Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1981 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Jul 31, 2001 |
Classification
- Technology area (CPC —)General
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.