Industrial Controllers

Take Control Now and Connect with the Best!

The Walchem Controllers W100, W600 and Web Master series provides reliable, flexible and powerful control for your water treatment program.

Key Features:

  • W600 with large touchscreen display with icon based programming makes setup easy
  • Universal sensor input provides extraordinary flexibility; the same controller can be used with almost any type of sensor needed
  • Optional dual analog (4-20 mA) input for Fluorometers or nearly any other process value
  • Multiple language support allows simple setup no matter where your business takes you


  • Sebera control outputs allow the controller to be used in more applications
  • Economical wall-mount package for easy installation
  • On-screen graphing of sensor values and control output status


  • Complete flexibility in the function of each relay:


  • On/Off Setpoint
  • Time Proportional Control
  • Pulse Proportional Control (when purchased with solid-state relays)
  • In-Range or Out-of-Range activation
  • Probe wash
  • Timer-based activation
  • Activation based upon the state of a contact closure
  • Timed activation triggered by Water Contactor / Paddlewheel flow meter’s accumulated total flow
  • Activate with another output
  • Activate as a percent of another output’s on-time
  • Alarm
  • For Cooling Tower and Boiler applications:
  • Biocide Timer
  • Boiler blowdown on conductivity using intermittent sampling


  • Datalogging
  • Ethernet option for remote access via the Internet or LAN

Established clientele:

  • Wastewater Control
  • Polymer System (flocculant) solutions
  • Biocide Injection System
  • Anti foam injection system
  • Coagulant injection system
  • felt conditioning on pulp & paper machines
  • Injection feed systems (chemical skids systems)
  • Disinfection, pH, ORP and conductivity analysis
  • Polymer System wet end of paper machines