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

被引：1
|
作者：
Grigor'ev, S. N. [1 ]
Karpova, E. E. [1 ]
Oshurko, V. B. [1 ]
机构：
[1] Moscow State Technol Univ STANKIN, Moscow 127994, Russia
来源：
TECHNICAL PHYSICS | 2014年 / 59卷 / 08期
关键词：
COATINGS;
D O I：
10.1134/S1063784214080118
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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.
引用
收藏
页码：1238 / 1241
页数：4
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