Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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C Gas Sensors Operating at Relatively Low Temperature

저 전력용 CO가스 감지소자

  • Lee, Sung Pil (Dept. of Elec. Eng., Kyungpook National Univ.) ;
  • Lee, Yong Hyun (Dept. of Elec. Eng., Kyungpook National Univ.) ;
  • Lee, Duk Dong (Dept. of Elec. Eng., Kyungpook National Univ.) ;
  • Sohn, Byung-Ki (Dept. of Elec. Eng., Kyungpook National Univ.)
  • 이성필 (경북대학교 전자공학과) ;
  • 이용현 (경북대학교 전자공학과) ;
  • 이덕동 (경북대학교 전자공학과) ;
  • 손병기 (경북대학교 전자공학과)
  • Published : 1986.06.01
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Abstract

SnO2/Pt CO gas sensors operating at relatively low temperature were fabricated, and their performance characteristics were measured. When the mixing weight ratio of SnO2/Pt was 99.5/0.5, a good sensitivity to CO gas was obtained. And the experimental results were in consistent with the gas sensing model. The optimum operating, temperature range of the fabricated devices was 50-80\ulcorner and the response time was 15 sec. at 80\ulcorner in 1000 ppm CO ambient. The humidity dependence of sensitibity to CO gas could be reduced by adding hydrophokbic silica to the mixture of SnO2 and Pt. For the practical application of the fabricated devices, a CO gas alarming system has been developed.

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