Research on testing methods for operating temperature of sensitive substancesunder different hydrogen concentrations
A method for thermal resistance testing of the sensitive substances is proposed for catalytic combustion hydrogen sensors,aiming to accurately measure the working temperature of the sensitive substances. A linear corresponding relationship between the thermal resistance of the sensitive substances and the working temperature is established,and the measurements of the thermal resistance of the sensitive substances under different hydrogen concentrations are achieved. The working temperatures of the sensitive substances under different hydrogen concentrations are accurately calculated. It is found by experiment that the working temperature of the sensitive substances compensation element gradually decreases with the increase of hydrogen concentration,while the working temperature of the sensitive substances sensitive element gradually increases with the increase of hydrogen concentration,with a rate of(40～50)℃/1％ VOL.
catalytic combustionsensitive substancesoperating temperature
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