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Water Treatment Controllers W100W Series From Walchem Corporation

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

W100W Controllers

Plug into more options in water treatment control!

Three powerful control outputs make the Walchem W100W a more versatile, high value choice among entry level water treatment controllers.

The W100W series provide an economical and reliable way to keep your water treatment program under control.

Key Features:

  • Large 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

  • Multiple language support allows simple setup no matter where your business takes you

  • Three control outputs allow the controller to be used in more places than other entry level models

Typical Applications:

  • Wastewater neutralization & disinfection

  • Food and Beverage disinfection

  • Potable water treatment

  • Swimming pools & spas

  • Boiler water treatment control

  • Cooling tower biocide control

  • Metal finishing & printed circuit board

  • Irrigation & fertigation

  • RO Systems

  • Condensate water treatment control

Features of the Cooling Tower/Boiler W100W:

  • Economical package with no additional cost for timer functionality

  • Optional analog (4-20 mA) output for recording, datalogging or connection to building energy management systems

  • Complete flexibility in the function of each relay

    • Bleed on conductivity

    • Bleed time proportional to makeup water volume

    • Boiler Blowdown on conductivity using intermittent sampling

    • Feed in proportion to bleed time

    • Feed time proportional to makeup water volume

    • Feed as a percentage of elapsed time

    • Biocide timer with pre-bleed and post-feed bleed lockout options

    • Alarm

Features of the Conductivity, pH/ORP & Disinfection W100W:

  • Three pH/ORP models available for use with amplified electrodes, non-amplified electrodes with a BNC connector or non-amplified electrodes without a connector

  • Economical wall-mount package for easy installation

  • 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

    • 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

    • Activate as a percent of another output's on-time

    • Alarm

pdf W100W Cooling Tower/Boiler Controller Brochure
pdf W100W pH/ORP,Conductivity, Disinfection Controller Brochure


pdf W100W Cooling Tower/Boiler
pdf W100W pH/ORP,Conductivity, Disinfection




About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


Our Products

Dataloggers, sensors, pumps, recorders, hand held instruments, flow instrumentation, level controls, valves, instrumentation, containers, tanks, transmitters, data loggers, digital indicators, mixers and agitators, pressure intrumentation, analyzers and controllers for a variety of industrial applications such as water quality, pH/ORP and more.

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Water Analyzers and Controllers, Wireless Products, Corrosion Monitoring Equipment, Cooling Tower and Boiler Controllers, a wide variety of Pumps, Valves, Dataloggers and Recorders, HVAC, Instrumentation, Skids and Systems, Containers and Tanks from world leading manufacturers are products you will find on this site.

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