GAS-MEASURING APPARATUS

PROBLEM TO BE SOLVED: To enhance versatility of a gas-measuring apparatus equipped with a plurality of gas sensors. SOLUTION: A sensor unit 9a equipped with an alcoholic sensor, a sensor unit 9b equipped with an aldehyde sensor, a sensor unit 9c equipped with an ester sensor, a sensor unit 9d equipped with a carboxylic acid sensor and a sensor unit 9e equipped with an amine sensor are arranged between the gas inlet 3a and gas outlet 3b of a sensor case 3 along the flow of a sample gas. The sensor units 9a-9e can be altered in the order of reception of the sample gas introduced from the gas inlet 3a within the sensor case 3, and for example, various arranging orders can be realized as shown in (A), (B).