WCM-PH100 pH and ORP Configurable Controller

The WCM-PH100 forms part of Meascom’s WCM Water Chemistry Monitoring and Controlling Series It is a configurable pH and ORP controller in the standard 96 mm x 96 mm front of panel format. It is a high precision yet very cost-effective instrument suited for continuous monitoring and control of pH or ORP in any environment. A range of suitable probes can be ordered for the controller.

The output can be retransmitted as an isolated analogue 4-20mA signal or via Modbus using a twisted pair connection to the RS485 terminals.

Summary of Specifications:

• Measurement range:
  • PH: 0-14 pH
  • ORP: -1000-+1000 mV or -2000-+2000 mV
• Precision : ±0.02 pH; ±1mV
• Resolution ratio: ±0.01 pH; ±1mV
• Stability : ≤0.02 pH/24H; ≤3 mV/24H
• Input impedance : ≥10^12
• Temperature measurement
  • range: 0-100℃
  • Accuracy: ±0.5℃, NTC 10K
• Temperature compensation: 0-100℃ manual/automatic
• Isolated retransmission:
  • 4-20mA output:
    • Accuracy: 0.1% of Span
    • Maximum loop resistance: 750Ω
• RS485 Output
  • compatible with standard MODBUS-RTU communication protocol
  • Baud Rate: 2400, 4800, 9600, 19200 selectable
• Power supply: DC 24V
• Alarm relay: 2 x Relays switching AC250V @ 3A or 32Vdc @ 3A