Power Meter Design service Input:true value three phase measure( ... /breaking line protection; Current: isolated analoge output 4-20mA for any signal input,measuring range settable.4) Measuring accuracy: ... ,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid ...