Temperature and humidity dependence of a polymer-based gas sensor

Martin G. Buehler; Margaret A. Ryan

doi:10.1117/12.280933

23 July 1997 Temperature and humidity dependence of a polymer-based gas sensor

Martin G. Buehler, Margaret A. Ryan

Proceedings Volume 3082, Electro-Optical Technology for Remote Chemical Detection and Identification II; (1997) https://doi.org/10.1117/12.280933
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper quantifies the temperature and humidity dependence of a polymer-based gas sensor. The measurement and analysis of three polymers indicates that resistance changes in the polymer films, due to temperature and humidity, can be positive or negative. The temperature sensitivity ranged from +1600 to -320 ppm/ degree(s)C and the relative humidity sensitivity ranged from +1100 to -260 ppm/%. These results were obtained from three-day experiments in an air ambient where the gas sensors were kept in stagnant air to allow for equilibration of the gas sensors and instruments used to measure the temperature and humidity. In spite of significant variations in temperature and humidity, the detection of 50 ppm resistance changes is possible.

Citation Download Citation

Martin G. Buehler and Margaret A. Ryan "Temperature and humidity dependence of a polymer-based gas sensor", Proc. SPIE 3082, Electro-Optical Technology for Remote Chemical Detection and Identification II, (23 July 1997); https://doi.org/10.1117/12.280933

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