GAS CONCENTRATION MEASURING FACILITY, AND GAS CONCENTRATION MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a gas concentration measuring facility and a gas concentration measuring method capable of safely performing a concentration measurement of a detection object gas continuously and with high accuracy, with a simple configuration.;SOLUTION: A gas concentration measuring facility includes: an air passage through which a gas to be inspected is supplied; a gas concentration measuring device for measuring a concentration of the detection object gas contained in the gas to be inspected inside the air passage by an optical sensor; and an air supply device provided with an ejector for supplying the gas to be inspected by introducing a compressed air or a compressed nitrogen into the air passage. According to this configuration, since the concentration of the detection object gas in the gas to be inspected flowing inside the air passage at an approximately constant speed can be nearly continuously and correctly measured, a gas concentration measuring facility excellent in accuracy of concentration measurement and reliability can be provided.;COPYRIGHT: (C)2015,JPO&INPIT