Find the source of combustible gas leaks in valves, pipes, and fittings. 40 PPM methane sensitivity, detects combustible gases including: Methane, Butane, Propane, Gasoline, Diesel and Kerosene. Tick rate can be nullified to eliminate background gas concentration and pinpoint the leak source. 40ppm methane sensitivity and bearing defects Trace natural gas lines and fittings for leaks frame to failure Check gas equipment for leaks Test propane tanks, fittings, lines, and heaters for leaks Check propane tanks, fitting lines, and heaters for leaks Test confined spaces for gas build-up