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Ethylene monitoring in the "fingerprint" region using a mini White-cell and a micromachined IR-emitter

: Hildenbrand, J.; Hartwig, S.; Moreno, M.; Fonollosa, J.; Rubio, R.; Santander, J.; Fonseca, L.; Lehmann, V.; Riedel, W.J.; Wöllenstein, J.

Eurosensors XIX. Proceedings. Vol.1: M,T : Barcelona, Spain, 11th - 14th September 2005
Barcelona, 2005
Eurosensors <19, 2005, Barcelona>
Fraunhofer IPM ()
C2H4; optical gas sensor; long path cell

Precise and continuous ethylene detection is needed in various fruit storage applications. One of the main goals of the presented work is the development of gas sensor systems for ethylene monitoring based on miniaturized low cost infrared spectroscopy. The developments concentrate on systems based on small multi pass reflection cells, novel micromachined IR-emitters and thermopile arrays in order to measure at a wavelength of 10.6 µm, a rotational vibrational region (finger print region) of ethylene. First ethylene measurements were carried out.