Remote measurement of concentration of a gas specie by resonance absorption
US4362388A · kind A · utility
4Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1980 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Nov 17, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/39
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The concentration of a selected gas specie at a situs determined by directing a laser beam at the situs, the beam including a wavelength within the resonance absorption band of the gas specie, and measuring the intensity of the laser beam energy scattered from two spaced volumes along said beam at the situs. The ratio of measured intensities is a relative measure of the concentration of the gas specie at the situs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.