Ultraviolet absorption hygrometer
US4627284A · kind A · utility
7Cited by
8References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1985 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Jul 22, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultraviolet absorption hygrometer is provided including a source of pulsed ultraviolet radiation for providing radiation in a first wavelength region where water absorbs significantly and in a second proximate wavelength region where water absorbs weakly. Ultraviolet radiation in the first and second regions which has been transmitted through a sample path of atmosphere is detected. The intensity of the radiation transmitted in each of the first and second regions is compared and from this comparison the amount of water in the sample path is determined.
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