... 100% LEL/ 0~50000ppm 3)accuracy:5% Combustible Gas Detector Model: SPD202/ExShenzhen Sanpo Instrument Co.,Ltd (A1)can ... time: 10 seconds1) Detecting principle: catalytic combustion2) Detected gas: combustible gas3) Measurement range: 0-100% LEL /0 ... petroleum, metallurgy, oil depot, LPG (Liquefied Petroleum Gas) station , pharmaceutical, gas transmission and distribution, etc. to detect the leakage ...