This product is a laser absorption spectroscopy-based device for non-contact measurement of natural gas (CH4) concentration, but can also be used to replace the laser for the measurement of CO, NH3,
C2H4 and other gases.
When the instrument works, it emits a specific wavelength range of detection laser (the center wavelength is different for different gases to be measured) ,and the detection laser encounters reflective objects (such as the ground, valves, pipelines, wall surfaces, etc.) and then diffusely reflects,and part of the laser light is returned to the detection unit of the instrument. In the beam path, if there is a gas leakage of the measured gas to form a gas cloud, the gas cloud will be absorbed by the detection laser, the unabsorbed light volume and the ratio of the absorbed light volume and the concentration of the gas cloud into a function of proportionality, through the calculation of the ratio of the inverse of the concentration of the gas cloud.
