9 October 1995 Optical-based UV-IR gas detector for environmental monitoring of flammable hydrocarbons and toxic gases
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Proceedings Volume 2504, Environmental Monitoring and Hazardous Waste Site Remediation; (1995) https://doi.org/10.1117/12.224112
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany
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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yair Dankner, Yair Dankner, Esther Jacobson, Esther Jacobson, Efraim Goldenberg, Efraim Goldenberg, Sergey Pashin, Sergey Pashin, } "Optical-based UV-IR gas detector for environmental monitoring of flammable hydrocarbons and toxic gases", Proc. SPIE 2504, Environmental Monitoring and Hazardous Waste Site Remediation, (9 October 1995); doi: 10.1117/12.224112; https://doi.org/10.1117/12.224112
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