Method and apparatus for detecting hydrocarbon vapors in a monitored area
US5281816A · kind A · utility
64Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Apr 6, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3155
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting the presence of a predetermined hydrocarbon vapour of a predetermined concentration in a monitored area by: exposing gas in or from the monitored area to radiation from a Xenon flashlamp which includes ultraviolet radiation of a predetermined ultraviolet spectral range and infrared radiation of a predetermined infrared spectral range; detecting the radiation after having passed through the gas; and comparing the detected radiation with a reference of predetermined attenuation characteristics of the hydrocarbon vapour and concentration in the respective ultraviolet and infrared spectral range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.