Real-time gas-correlation imaging employing thermal background radiation
Författare
Summary, in English
Real-time imaging of gas leaks was demonstrated using an IR camera employing outdoor thermal background radiation. Ammonia, ethylene and methane detection was demonstrated in the spectral region 7-13 mu m. Imaging was accomplished using an optical filter and a gas-correlation cell matching the absorption band of the gas. When two gases, such as ammonia and ethylene, are absorbing in the same wavelength region it is possible to isolate one for display by using gas-correlation multispectral imaging. Results from a field test on a leaking gas tanker are presented as QuickTime movies. A detection limit of 200 ppm x meter for ammonia was accomplished in this setup when the temperature difference between the background and the gas was 18 K and the frame rate was 15 Hz. (C) 2000 Optical Society of America.
Avdelning/ar
Publiceringsår
2000
Språk
Engelska
Sidor
92-103
Publikation/Tidskrift/Serie
Optics Express
Volym
6
Issue
4
Fulltext
- Available as PDF - 299 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
Optical Society of America
Ämne
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1094-4087