Gas Detector Sensor Gas Detected Methane Measurement Range 0 to 100 Percent LEL Compatible Detector Model/Series Ventis Pro5 Compatible Detector Grainger Part Number 49JZ97 Sensor Type Catalytic For Detector Type Portable T90 Response Time 10 sec Sensor Life 4 yr Series Ventis Pro5 Resolution 1 Percent LEL T50 Response Time 7 sec Operating Temperature - Maximum 131 Degrees F Operating Temperature - Minimum -4 Degrees F Chemical Formula CH4