Vortex flow sensor, simple structure, no moving parts,high accuracy and reliability. 1. Introduction Vortex flow sensor is a internationally advanced new type ... .2. Features:a) Simple structure, no moving parts;b) High accuracy , high reliability, no need of field debugging;c) Capable ... current, 4~20mA;Voltage pulse, low level no more than 1V, high level no less than 6V, load resistor below 150Display ...