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Proceedings Paper

Portable natural gas leak detector for survey inspections
Author(s): M. E. Paige; Joel A. Silver; Dale Petroski; David S. Bomse
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Paper Abstract

A diode laser based natural gas leak detector has been developed that can measure methane concentrations over six orders of magnitude, from ambient (1.7 ppm) to pure gas levels. The detection method utilizes a small multipass cell and wavelength modulation absorption spectroscopy. At high methane concentration, various forms of unmodulated absorption spectroscopy are used. The instrument is a handheld unit that operates on less than 2 W of power and weighs 1.4 kg (including battery). A small pump on the unit pulls outside gas into the enclosed optical cell through an extendable probe. The response time of the instrument is approximately 1 - 2 sec.

Paper Details

Date Published: 25 October 2006
PDF: 5 pages
Proc. SPIE 6378, Chemical and Biological Sensors for Industrial and Environmental Monitoring II, 63780Z (25 October 2006); doi: 10.1117/12.685230
Show Author Affiliations
M. E. Paige, Southwest Sciences, Inc. (United States)
Joel A. Silver, Southwest Sciences, Inc. (United States)
Dale Petroski, Southern Cross Corp. (United States)
David S. Bomse, Southwest Sciences, Inc. (United States)

Published in SPIE Proceedings Vol. 6378:
Chemical and Biological Sensors for Industrial and Environmental Monitoring II
Steven D. Christesen; Arthur J. Sedlacek; James B. Gillespie; Kenneth J. Ewing, Editor(s)

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