A hybrid thermal video and FTIR spectrometer system for rapidly locating and characterizing gas leaks

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dc.contributor.author Williams, David en_US
dc.contributor.author Wadsworth, Winthrop en_US
dc.contributor.author Salvaggio, Carl en_US
dc.contributor.author Messinger, David en_US
dc.date.accessioned 2007-06-22T15:19:12Z en_US
dc.date.available 2007-06-22T15:19:12Z en_US
dc.date.issued 2006-08 en_US
dc.identifier.citation Proceedings of SPIE Remote Sensing of Aerosol and Chemical Gases, Model Simulation/Assimilation, and Applications to Air Quality 6299 (2006) 62990O-1-4 en_US
dc.identifier.issn 0277-786X en_US
dc.identifier.uri http://hdl.handle.net/1850/4072 en_US
dc.description "A hybrid thermal video and FTIR spectrometer system for rapidly locating and characterizing gas leaks," Proceedings of SPIE, Remote Sensing of Aerosol and Chemical Gases, Model Simulation/Assimilation, and Applications to Air Quality, vol. 6299. The International Society of Optical Engineers. Held in San Diego, California: August 2006. This paper is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. en_US
dc.description.abstract Undiscovered gas leaks, known as fugitive emissions, in chemical plants and refinery operations can impact regional air quality and present a loss of product for industry. Surveying a facility for potential gas leaks can be a daunting task. Industrial leak detection and repair programs can be expensive to administer. An efficient, accurate and cost effective method for detecting and quantifying gas leaks would both save industries money by identifying production losses and improve regional air quality. Specialized thermal video systems have proven effective in rapidly locating gas leaks. These systems, however, do not have the spectral resolution for compound identification. Passive FTIR spectrometers can be used for gas compound identification, but using these systems for facility surveys is problematic due to their small field of view. A hybrid approach has been developed that utilizes the thermal video system to locate gas plumes using real time visualization of the leaks, coupled with the high spectral resolution FTIR spectrometer for compound identification and quantification. The prototype hybrid video/spectrometer system uses a sterling cooled thermal camera, operating in the MWIR (3-5 µm) with an additional notch filter set at around 3.4 µm, which allows for the visualization of gas compounds that absorb in this narrow spectral range, such as alkane hydrocarbons. This camera is positioned alongside of a portable, high speed passive FTIR spectrometer, which has a spectral range of 2 – 25 µm and operates at 4 cm-1 resolution. This system uses a 10 cm telescope foreoptic with an onboard blackbody for calibration. The two units are optically aligned using a turning mirror on the spectrometer’s telescope with the video camera’s output. en_US
dc.language.iso en_US en_US
dc.publisher The International Society for Optical Engineering (SPIE) en_US
dc.relation.ispartofseries vol. 6299 en_US
dc.subject FTIR en_US
dc.subject Gas detection en_US
dc.subject Infrared en_US
dc.subject Spectroscopy en_US
dc.subject Thermography en_US
dc.title A hybrid thermal video and FTIR spectrometer system for rapidly locating and characterizing gas leaks en_US
dc.type Article en_US

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