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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 4 — Feb. 1, 2009
  • pp: 695–703

Development of a multiple gas analyzer using cavity ringdown spectroscopy for use in advanced fire detection

Eric A. Fallows, Thomas G. Cleary, and J. Houston Miller  »View Author Affiliations


Applied Optics, Vol. 48, Issue 4, pp. 695-703 (2009)
http://dx.doi.org/10.1364/AO.48.000695


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Abstract

A portable cavity ringdown spectroscopy (CRDS) apparatus was used to detect effluents from small test fires in the Fire Emulator/Detector Evaluator (FE/DE) and a small room in the Building Fire and Research Laboratory at the National Institute of Standards and Technology (NIST). The output from two lasers is combined to detect four combustion gases, CO, CO 2 , HCN, and C 2 H 2 , near simultaneously using CRDS. The goal of this work was to demonstrate the feasibility of using a CRDS sensor as a fire detector. Fire effluents were extracted from several test facilities and measurements of CO, CO 2 , HCN, and C 2 H 2 were obtained every 25–30 s. In the FE/DE test, peak concentrations of the gases from smoldering paper were 420 parts in 10 6 ( ppm ) CO, 1600 ppm CO 2 , 530 parts in 10 9 ( ppb ) HCN, and 440 ppb C 2 H 2 . Peak gas concentrations from the small room were 270 ppm CO, 2100 ppm CO 2 , and 310 ppb C 2 H 2 .

© 2009 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.2020) Lasers and laser optics : Diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: October 9, 2008
Manuscript Accepted: November 19, 2008
Published: January 21, 2009

Citation
Eric A. Fallows, Thomas G. Cleary, and J. Houston Miller, "Development of a multiple gas analyzer using cavity ringdown spectroscopy for use in advanced fire detection," Appl. Opt. 48, 695-703 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-4-695

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