Starting at $632.00
  • Usually ships in 6-8 weeks



  • Universal sensor input
  • Flexible relay functions
  • UL, CSA, IEC & EN certifications


Walchem W100W pH / ORP / Con / Disinfection Flow Controller has a large display with icon based programming, making setup easy. With multiple language support the Walchem W100W provides simple setup no matter where your business takes you. Universal sensor input provides flexibility; the same controller can be used with almost any type of sensor needed. Three pH/ORP/ISE models available for use with amplified electrodes, non-amplified electrodes with or without a connector.

Flexibility in the function of each relay

  • On/off setpoint
  • Time proportional control
  • Pulse proportional control
  • In-range or out-of-range activation
  • Probe wash timer
  • Timer-based activation
  • Activation based upon the state of a contact closure
  • Timed activation triggered by a water contactor or paddlewheel flow meter's accumulated total flow
  • Activate with another output
  • Alarm
  • PID control