Gas measurement over extreme dynamic range of concentrations
US7616316B1 · kind B1 · utility
25Cited by
13References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 27, 2007 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Jan 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical spectroscopy apparatus and method for measurement of species concentration, number density, or column density comprising emitting light from a laser light source, receiving light via a fixed length optical path from the source and containing a species to be detected, receiving light via a detector at an end of the path, determining one or more of species concentration, number density, and column density via signal processing electronics connected to the detector, and switching between a plurality of operational modes measuring a same absorption feature of the species depending on measured absorbance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.