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气体报警器的原理是什么

 气体报警器的关键部件为气体传感器,从原理可以分为三类:
1、利用物理化学性质的气体传感器:如半导体、催化燃烧、固体导热、光离子化等
2、利用物理性质的气体传感器:如热导、光干涉、红外线式等
3.、利用电化学的气体传感器:电流型、电势型

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