Details

Autor(en) / Beteiligte

• Hennig, Oliver
• Strzoda, Rainer
• Mágori, Erhard
• Chemisky, Eric
• Tump, Christian
• Fleischer, Maximilian
• Meixner, Hans
• Eisele, Ignaz

Titel

Hand-held unit for simultaneous detection of methane and ethane based on NIR-absorption spectroscopy

Ist Teil von

• Sensors and actuators. B, Chemical, 2003-10, Vol.95 (1-3), p.151-156

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2003

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The characteristic NIR-absorption lines of methane and ethane are being acquired simultaneously and their concentrations are determined using a tunable DFB laser diode. This paper reports on the development of a hand-held and low-power sensor, based on direct absorption spectroscopy for leak detection (methane), natural gas identification and lower-explosion-limit (LEL) measurements (methane and ethane). The algorithm corrects for ambient temperature and pressure. At normal conditions and constant operation a battery-lifetime of 8+h is achieved.