... and durability competitive price glue flow meter with good quality,flowmeterRXDC differential intelligent flow meter is improved from traditional flow meters ... volumetric, vane-wheel, by-pass, orifice, differential pressure flow meter. It was widely used in fields of gas, natural ... external power supply of 24VDC; 220VAC (only for separate digital tube)Output formsSite display reading; 4~20mA (2-wire ...