SF6 gas, as an excellent insulation arc extinguishing gas, has been widely used in the power industry. The leakage of SF6 gas can cause huge safety hazards to power equipment. At the same time, SF6 is a greenhouse gas equivalent to 23900 times carbon dioxide, so the monitoring of SF6 leakage is particularly important in the power industry. The GL800i mainly uses a refrigeration type infrared detector to image and detect the leaked SF6 gas, which can quickly and accurately locate the leak location and is an essential detection tool for the power inspection department.