Gas detectors and gas analyzers utilizing spectral absorption
US6396056B1 · kind B1 · utility
29Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Jul 8, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3518
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Instrumentation to detect the presence of, or to measure the concentration of, a gas or pollutant in a gaseous environment. With the use of spectroscopic techniques and energy beams having suitable wavelengths, the presence and concentrations of these can be detected and measured, not only in flowing streams such as in process streams or exhaust stacks, but above a ground area, around its perimeter, or across the road. A calibration means including an internal audit cell and a retrodirective reflector is also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.