toxic gas monitor,Explosion proof,intrinsically safe,Corrosion resistant,4-20 ... alarmMeasurementToxic GasesPrincipleElectrochemicalSample MethodDiffusionMeasurementO2 , CO, H2S, H2, Cl2, SO2 and other toxic gasesAccuracy±3%F.SResponse Time (T90)≤30 sec at 25 ...