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Sandsten J, Weibring P, Edner H, et al. Real-time gas-correlation imaging employing thermal background radiation. Opt Express. 2000;6(4):92-103doi: 10.1364/oe.6.000092.
Sandsten, J., Weibring, P., Edner, H., & Svanberg, S. (2000). Real-time gas-correlation imaging employing thermal background radiation. Optics express, 6(4), 92-103. https://doi.org/10.1364/oe.6.000092
Sandsten, J, et al. "Real-time gas-correlation imaging employing thermal background radiation." Optics express vol. 6,4 (2000): 92-103. doi: https://doi.org/10.1364/oe.6.000092
Sandsten J, Weibring P, Edner H, Svanberg S. Real-time gas-correlation imaging employing thermal background radiation. Opt Express. 2000 Feb 14;6(4):92-103. doi: 10.1364/oe.6.000092. PMID: 19401749.
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Opt Express. 2000 Feb 14;6(4):92-103. doi: 10.1364/oe.6.000092.

Real-time gas-correlation imaging employing thermal background radiation.

Optics express

J Sandsten, P Weibring, H Edner, S Svanberg

PMID: 19401749 DOI: 10.1364/oe.6.000092

Abstract

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 microm. 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.

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