Power Meter Design service Input:true value three phase ... ampere input isolation, high anti-interference;5) Comunication: RS232/RS485 interface, MODBUS RTU procotol. connectable with other equipment, computer ... 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 ...