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Proceedings Paper

Effect of temperature on methane gas concentration by tunable diode laser absorption spectroscopy
Author(s): Yanjie Zhao; Yanfang Li; Tingting Zhang; Chang Wang; Tongyu Liu
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Paper Abstract

The effect of temperature on gas absorption characteristics is obvious. When the tunable diode laser absorption spectroscopy (TDLAS) technique is applied to monitor the methane gas concentration, the influence of temperature must be correction in order to measure the gas concentration accurately. Based on HITRAN database, the absorption characteristics of methane near infrared spectrum with temperature have been researched. Then a multiplexed fiber optic methane monitoring system is designed and the distributed feedback (DFB) laser is employed as laser source. The effect of the temperature on the system is emphasized. The results show that it obviously improved concentration precision by compensating retrieval concentration. It is valuable references for the gas detection in practical applications.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421AP (7 November 2012); doi: 10.1117/12.968601
Show Author Affiliations
Yanjie Zhao, Laser Institute of Shandong Academy of Sciences (China)
Yanfang Li, Laser Institute of Shandong Academy of Sciences (China)
Tingting Zhang, Laser Institute of Shandong Academy of Sciences (China)
Chang Wang, Laser Institute of Shandong Academy of Sciences (China)
Tongyu Liu, Laser Institute of Shandong Academy of Sciences (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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