W900 Controllers

CONTRÔLEUR W900 EST MODULAIRE – PLATE FORME WEB
Connect with the Walchem W900 Series controllers and enjoy unparalleled versatality in maintaining your water treatment options.

Summary of Key Benefits:

• 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
• Four I/O slots allow complete flexibility in adding additional sensors, analog inputs and analog outputs
• Multiple language support allows simple setup
• Eight replay control outputs allow the controller to be used in more applications
• Economical wall-mount package for easy installation
• On-screen and web page 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 4-20 mA or pulse solid state opto outputs)
  • Flow Proportional Control (when purchased with 4-20 mA or pulse solid state opto outputs)
  • PID control (when purchased with 4-20 mA or pulse solid state opto outputs)
  • 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
  • Spike Set Point
  • PPM Volume
  • Target PPM
  • For Cooling Tower and Boiler applications:
  • • Biocide Timer
    • Boiler blowdown on conductivity using intermittent sampling
• Datalogging
• Email Alarm messages, Datalog reports or System Summary reports
• Ethernet for remote access via the Internet, LAN or optional Modbus/TCP