Optical based UV-IR gas detector for monitoring hydrocarbons and toxic gases

Yair Dankner; Esther Jacobson; Efraim Goldenberg; Sergey Pashin

doi:10.1117/12.211185

6 June 1995 Optical based UV-IR gas detector for monitoring hydrocarbons and toxic gases

Yair Dankner, Esther Jacobson, Efraim Goldenberg, Sergey Pashin

Proceedings Volume 2426, 9th Meeting on Optical Engineering in Israel; (1995) https://doi.org/10.1117/12.211185
Event: Optical Engineering in Israel: 9th Meeting, 1994, Tel-Aviv, Israel

Abstract

The infrared and ultraviolet emission spectra of hydrocarbons and toxicants was measured and analyzed as compared to theoretical data at room temperature. Based on this data we constructed an electro-optical gas detector for monitoring low concentration of flammable paraffins, aromatics, and toxic hydrogen-sulfide. The optical method uses two wavelengths at several spectral bands: the signal and the reference which is sampled at a region where the hazardous gas does not absorb at all. Our apparatus is an innovative system that provides fast and reliable explosion detection at different lower explosion levels (LEL). As well, it can provide identification of low concentration of toxicants in the range of parts per million. The apparatus includes a fire detection option that can offer at the same time an automatic activation of fire suppression or neutralization system. It can detect paraffins in the range between 0.03 to 20 LEL per 1 meter by using the ultraviolet spectral band. At both regions the accuracy is about 20%. This open-path, line-of-sight gas detector can monitor and transmit an alarm signal prior to occurrence of fire or explosion.

Citation Download Citation

Yair Dankner, Esther Jacobson, Efraim Goldenberg, and Sergey Pashin "Optical based UV-IR gas detector for monitoring hydrocarbons and toxic gases", Proc. SPIE 2426, 9th Meeting on Optical Engineering in Israel, (6 June 1995); https://doi.org/10.1117/12.211185

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