... digital display of LCD high qualiy and tech small size gas flow meter ( 6mm ) We are ... , steam, ropy mediums or ambulatory mediums in low, normal or high temperature condition.2,Total quantity ... Diameter:6-4000mmNominal pressure:-0.1+70MPaTemperature:-196°(low temperature type)-40°~ +70°(normal temperature),-40°~ ... li batter,(lifetime 1~2 years),external power supply of 24VDCOutput forms:4-20mA;pulse, ...