| 摘要 |
PROBLEM TO BE SOLVED: To realize a technique capable of detecting plural detected gases in their favorable conditions, in a gas detector provided with a gas detecting part comprising a metal oxide semiconductor as a main component, and capable of detecting the respective different detected gases in respective detection temperatures when the plural kinds of detection temperatures are set and switched thereamong in the gas detecting part, and in an operation method therefor. SOLUTION: The gas detecting part is switched in order to the plural kinds of detection temperatures, and the gas detecting part is set at a purge temperature higher than the plural kinds of gas detecting temperatures to carry out a purge when the plural kinds of detecting temperatures are switched.
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