GAS SENSING MEMBER AND GAS DETECTION APPARATUS SUITABLE THEREFOR

摘要

A gas sensing member that can minimize corrosion and sensitivity deterioration attributed to sublimation of reactive reagents. There is provided a gas sensing member comprising frame (1) having one of its opposite faces fitted with non-gas-permeable optical concentration detection window (4) capable of optical concentration detection and having the other of its opposite faces fitted with gas permeable layer (6) capable of gas inflow and, housed in the frame (1), reactive reagent impregnation material (7) capable of being impregnated with a reactive reagent which is colored by reaction with subject gas.