... moving parts,no abrasion.High accuracy, high reliability Vortex flow meter/ flow meter/Air flowmeter/Gas flowmeterVortex flow meter1. IntroductionVortex ... steam, general gas and liquid.2. Features:a) Simple structure, no moving parts;b) High accuracy , high reliability, no need ... 20mA;Voltage pulse, low level≤1V, high level≥6V, load resistor>150ΩDisplay:Two-line LCD local display,Remote transmission.