GAS SAMPLE CHAMBER AND CONCENTRATION MEASURING APPARATUS WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a gas sample chamber and a concentration measuring apparatus with the gas sample chamber capable of improving sensitivity in measuring the concentration of a gas to be measured in atmosphere and performing speedy measurements.

SOLUTION: The concentration measuring apparatus 1 includes the gas sample chamber 2 and a microcomputer. The gas sample chamber 2 includes a measuring cell 6; a light source 7; and a light-receiving unit 8. The measuring cell 6 is formed in tubular shape. A sidewall 22 is constituted of a first wall 24 and a second wall 25 which are arranged at intervals from each other but of which parts are superposed on each other. The sidewall 22 includes a communicating part 26 making the inside and outside of the measuring cell 6 communicate with each other. The light source 7 is provided for one end of the measuring cell 6 to irradiate infrared rays toward the other end. The light-receiving unit 8 includes a plurality of light receivers 12 provided for the other end of the measuring cell 6 to receive the infrared rays from the light source 7.

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