Combustible Gas Detector 50‑50000PPM LCD Display Screen Portable Gas Leak Tester for Pipeline Item Type: Combustible Gas Detector Material: ABS Display: LCD high definition color screen display Probe Length: Approx. 280mm / 11.02in Power Supply: 3 x AAA batteries required (shipped without batteries) Detection Flow: 1L/min (min) Gas Resolution: 1% LEL, 1PPM Temperature Resolution: 0.1℃, 0.2℉ Gas Measurement Range: 1-100%LEL, 50-50000PPM (based on CH4) Temperature Measurement Range: 0-50℃, 32-122℉±(2℃, 4℉) Measurement Accuracy: ±5%FS Sampling Method: Diffusion type Response Speed: 2 seconds Calibration Method: 30 seconds auto calibration at power on Automatic Shutdown: About 10 minutes Detectable Gases: Methane, natural gas, ethanol, gas, propane, benzene, ethylene oxide, hexane, n butane, ethylene Widely Used: Used in gas pipeline leak detection, domestic gas prevention, metallurgy, tunnel and mine operation, oil and gas extraction, hazardous materials storage warehouses, etc.