Apparatus and method for measuring exhaust gas using multi-wavelength light extinction methods

摘要

The present invention relates to an apparatus for measuring exhaust gas using a multi-wavelength light extinction feature, comprising: a light irradiating portion; a tube; a vacuum pump; and a light measuring portion. The light irradiating portion irradiates lights of different wavelengths independently. The tube receives exhaust gas from a duct where the exhaust gas flows, and is penetrated by the light irradiated from the light irradiating portion. The vacuum pump forms a vacuum state in the tube such that the exhaust gas flows from the duct to the tube. The light measuring portion receives the light irradiated from the light irradiating portion and penetrated through the tube and measures the intensity of the light.