NDLI: Large scale multiplexing a point sensor for methane gas detection

Content Provider	IEEE Xplore Digital Library
Author	Culshaw, B. Johnstone, W. McLean, A. Mauchline, I. Moodie, D. Stewart, G.
Copyright Year	2002
Description	Author affiliation: Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK (Culshaw, B.; Johnstone, W.; McLean, A.)
Abstract	This paper has reported the design and installation of a highly multiplexed (45 point) methane gas detection system using single mode fibre optics linked to remote miniature open path absorption cells interrogated by a single DFB laser diode configured for frequency modulation spectroscopy. To our knowledge this is the first such system to be site tested. The system operates over a wide area with total link lengths from source to detector extending up to about 6 km and has proved to be rugged and stable through the operating conditions on an active methane gas producing landfill site. Initial results on a small scale trial system give optimism for future reliability and the system behaviour will continue to be closely observed. It also seems very probable that the data obtained from continuous positioning will give new insights into site dynamics. Within its present configuration the system could be readily extended to address 64 points though we believe that, for this application, a 128 point system is totally feasible and a 256 point system may be achievable.
Starting Page	261
Ending Page	264
File Size	312337
Page Count	4
File Format	PDF
ISBN	0780372891
DOI	10.1109/OFS.2002.1000551
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Large-scale systems Gas detectors Absorption Monitoring Frequency Fuels Spectroscopy Petroleum Gas industry Power generation
Content Type	Text
Resource Type	Article

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