... superior service wet gas flow meterCharacteristics1. l Measurement flow of liquid, gas, steam, ropy mediums or ambulatory mediums in low, normal ... , differential pressure flow meter. It was widely used in fields of gas, natural gas, petroleum industry, chemical engineering, energy industry, food ... .1%~0.08%Power supplyBuilt-in 3.6V Li batter; external power supply of 24VDC; 220VAC (only for separate ...