Infrared gas analyzer
US5436457A · kind A · utility
19Cited by
0References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1994 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/06186
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compact infrared gas analyzer capable of reducing the quantity of heat generated from a radiation source and the effects of temperature on samples is provided. A shutter is provided between the radiation source and the sample cell and/or between the sample cell and a detector with the shutter in a closed position. The shutter is opened and closed during measurement. A resistor comprising a resistance element made of one of RuO.sub.2, W, SnO.sub.2, FeCrAlY, Pt, Pt-Rh and Pt-Pd, formed on an AlN substrate, may be used as the radiation source, with the radiation source and the shutter being interrelatedly controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.