OPTICAL MEASUREMENT SYSTEM FOR GAS CONCENTRATION

摘要

The present invention relates to an optical measurement system for gas concentration, characterized by comprising: an oscillating unit for oscillating a laser light into a gas to be measured; a light receiving unit for receiving the laser light transmitted through the gas to be measured and detecting the received light as an electrical signal; a data analyzer for using a direct absorption spectroscopy or a wavelength modulation spectroscopy to obtain an initial concentration of the gas to be measured, and, when an optical absorption rate is calculated from the measured concentration, selecting a measurement scheme through a comparison between a predetermined set value and the optical absorption rate. Therefore, the present invention exhibits the effects of enabling a more highly precise and accurate concentration measurement by automatically selecting a higher-precision concentration measurement scheme according to the optical absorption of the gas to be measured.