4. Application to methane gas detection
4.1 About methane
Methane detection has always been an interesting subject. In the past, its detection was necessary, in mines, to prevent firedamp. The detection of CH 4 has been the subject of numerous patent applications. Today, almost all commercial methane detectors are based on flame ionization. The technique is relatively simple: during normal combustion, a stable proportion of CH 4 molecules (around 0.0002%) temporarily ionize into the carbon ion C + and electrons e – . The flame produces the energy for this ionization. This phenomenon has a very short lifetime, and the charged components quickly...
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Application to methane gas detection
Airborne photoacoustic multi-gas detectors
Manufacturers – Suppliers – Distributors
Omnisens Systems (Switzerland) http://www.omnisens.ch/
Omnisens trace gas analyzers combine photoacoustic spectrometry with an innovative, highly sensitive detection technique. This results in fast response times, low detection limits and operation without periodic recalibration. The TGA320-X device detects ammonia (NH 3 ) for applications...
Bibliography
Websites
University of Reims. http://www.univ-reims.fr/
Harvard University. http://cfa-www.harvard.edu/HITRAN/
Alpes lasers. http://www.alpeslasers.com/...
Theses
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