PGas-23 methane gas detector: 1.can detect combustible gas 2.wide measurement range 3.high accuracy 4.wide measurement range PGAS-23 Flammable Gas leakage detector, Combustible Gas Detector PGas-22 can detect combustible & flammable gas leakage, wide measurement range, long working life, high accuracy, simple operation, compact.Main featuresl Durable, reliable and easy to use with no downtimel ...