EXPEC 3200-200 portable total hydrocarbon, methane and non-methane total hydrocarbon measuring instrument adopts high temperature catalytic oxidation + FID detection technology. It can effectively avoid the loss of samples with high boiling point and high concentration, and realize the accurate measurement of total hydrocarbons, methane and non-methane total hydrocarbons in waste gas from fixed pollution sources and fugitive emissions. The detection limit can reach ppb level, and the product is completely in line with non-methane total hydrocarbon The on-site monitoring method standard meets the index requirements in the "Technical Requirements and Detection Methods for Portable Monitors for Total Hydrocarbons, Methane and Non-methane Total Hydrocarbons in Ambient Air and Exhaust Gas" (HJ 1012-2018).