The GL01-CH4 laser methane sensor is developed based on tunable laser gas absorption spectroscopy technology (TD-LAS) and uses a 1653.7nm laser. Precise measurement of methane gas, resistant to water vapor or other gas interference; Based on the combination of direct absorption and wavelength modulation absorption spectroscopy, and the extended optical path structure design, the absorption optical path is long, and the detection sensitivity and accuracy are high. Laser and photodetector devices with excellent low temperature performance are selected and wide temperature compensation correction algorithms are adopted, which has strong environmental applicability; Standard screw mounting interface and standard communication interface design, strong versatility.

The sensing probe adopts open gas exchange mode and adopts a unique explosion-proof structure to ensure that the probe has the advantages of intrinsically safe type, high precision, fast response and low power consumption.