... -service high reliability and durabicity and durability. SBL digital target flow meter is improved from traditional flow meters and can take ... mass, volumetric, vane-wheel, by-pass, orifice, differential pressure flow meter. It was widely used in fields of gas, natural gas ... ; external power supply of 24VDC; 220VAC (only for separate digital tube)Output formsSite display reading; 4~20mA (2-wire system ...