NDIR NDIR A MULTI-GAS NDIR ANALYZER FOR MEASUREMENT OF HIGH-CONCENTRATION CARBON DIOXIDE AND A MEASUREMENT METHOD USING THE MULTI-GAS NDIR ANALYZER

摘要

The present invention relates to a non-dispersive infrared (NDIR) analyzer for measuring the concentration of various gases in the air, which performs measurement and analysis of each gas chamber to reduce time and cost. According to the present invention, the NDIR analyzer comprises: a low concentration gas measurement chamber forming one portion of the analyzer, formed in a tubular shape, having a gas inlet formed in one portion, and having a reflector installed on both inner ends to measure the concentration of a low concentration gas among the inflow gases while refracting and reflecting the gas received through the gas inlet; a high concentration gas measurement chamber formed in the same configuration as that of the low concentration gas measurement chamber, connected to a gas outlet formed in the low concentration gas measurement chamber to receive the gas, and having a shorter length than that of the low concentration gas measurement chamber to measure the concentration of a high concentration gas; and a controller connected to the low and high concentration gas measurement chambers to control operation of the low and high concentration gas measurement chambers.