This article is cited in 1 paper

Experimental instruments and technique

Diffusion processes in surface thermal catalysis and improvement of the stability of combustible gas sensors

S. N. Grigor'ev, E. E. Karpova, V. B. Oshurko

Moscow State Technological University "Stankin"

Abstract: We briefly describe the development of thermocatalytic sensors. Problems associated with instability of sensors during their operation are outlined. We propose that for improving stability, the access of the mixture being analyzed to the reaction chamber must be limited so that the condition in which the sensor output is by many times larger than the diffusion flux of the combustible gas through the calibrated orifice is observed. Diffusion processes are analyzed to work out recommendations for improving the measurement stability by several times.

Received: 06.09.2013

 English version: Technical Physics, 2014, 59:8, 1238–1241

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