The W400 Cooling Tower Controllers represent the latest in technological and innovative advancements from Walchem. All of the standard features you’d expect from a conventional cooling tower controller are included, plus optional simple-to-use information management tools that enable water treatment professionals to deliver more effective service to their customers. 

The W400 Controllers have the ability to store sensor and temperature values, water usage, relay status, and user settings. A USB memory stick is all that’s needed to extract the information. Download logs from the USB stick to a PC at your convenience, or copy your preferred treatment program settings to another controller to speed start-up. It couldn’t be easier!

WECT/EDT Controllers include an electrodeless conductivity sensor that’s impervious to contamination by oils, scale, biofilm or other coatings, resulting in a low maintenance system that provides reliable effective control.

Key Features:

  • Four chemical feed options
  • Self-Diagnostics
  • Flow Switch Manifolds
  • Conductivity Electrodes
  • Flow Meter Input
  • USB Flashstick Support
  • Alarm Output Relay


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