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引言近年来，SnO2系及Fe2O3系烧结型旁热式气敏元件应用越来越广泛．但由于两者导电机理不同，在选择使用时，对其工作区域的确定就显得极为重要．本文在测试大量数据的基础上，分别给出洁净空气中SnO2元件及Fe2O3元件阻值R．随加热功率PH变化的曲线，进行理论分析，为指导元件
Introduction In recent years, SnO2-based and Fe2O3-based sintering-type thermal gas sensor applications more and more widely. However, due to the different conduction mechanism between the two, when choosing to use, the determination of its working area becomes extremely important. On the basis of testing a large amount of data, this paper gives the resistance R of SnO2 components and Fe2O3 components in clean air respectively. With the heating power PH curve changes, the theoretical analysis, as a guide element