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