PC-3100 microcomputer pH/ORP controller, a brand new online pH controller and online ORP controller modelPH/ORP TRANSMITTER PC-3100.microcomputerpH/ORPmonitor,PC-3100 Microprocessor pH/ORP Transmitter,Process grade PC3100 pH/ORP transmitterIt can simultaneously correspond to pH measurement values, oxidation-reduction ORP values, and temperature, which is very helpful for your PLC data management and monitoring.