... flowmeter/Flowmeter Simple structure,No moving parts,no abrasion.High accuracy, high reliability Vortex flow meter/ flow meter/Air flowmeter/Gas ... . Features:a) Simple structure, no moving parts;b) High accuracy , high reliability, no need of field debugging;c) Capable of ... , 3.6V Lithium batterySignal Output:Standard current, 4~20mA;Voltage pulse, low level≤1V, high level≥6V, load resistor>150ΩDisplay ...