作者: Hidetoshi Oishi , Akihiro Suzuki , Takashi Sasaki , Takashi Saito
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摘要: A first gas sensing element is provided in a position to measure concentration of continuously, and second the intermittently. The close proximity position. deterioration determination unit connected with elements make as whether becomes deteriorated, by comparing output values from elements. power controller configured supply electric throughout waiting periods during which stops measuring gas, an amount supplied smaller than that operating continuously measures gas.