Water Treatment Controllers W100P Series
From Walchem Corporation

W100P Controllers

The W100P 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

  • Compact 1/4 DIN panel mount enclosure

  • Universal sensor input provides extraordinary flexibility; the same controller can be used with almost any type of sensor needed; conductivity (contacting and electrodeless), amplified pH/ORP, or disinfection

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

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

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

  • 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

    • Alarm

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

pdf W100P Brochure


pdf W100P Manual


Search This Site

(Search by Product Type i.e. Level or Brand Name i.e. Walchem)


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.

Website Content

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.

Get in Touch