Water Treatment Controllers

Cooling Tower and Boiler/Condensate Water Controllers are used across a wide range of process applications across the globe.  Whether you are looking for an economical and reliable way to keep your cooling tower, boiler, or condensate water treatment program to a more sophisticated program requiring more I/O, control algorithms, and remote data access. Walchem has a controller to meet your needs.

Combine these with a broad array of high quality, reliable sensors and diaphragm metering pumps to maintain your systems’ operation.  Walchem provides you with state-of-the-art control and remote communication capabilities giving you the instrumentation to apply your water treatment chemistries for top performance.

  • W100W Series: The controller features one sensor input and three control outputs. It is offered in an economical wall mount design. This entry level water treatment controller helps keep your water treatment program under control.
  • Intuition-6™: These controllers feature up to 4 inputs and 6 relay outputs. The universal sensor input is capable of using contacting conductivity, electrodeless conductivity, pH, ORP or disinfection sensor types. Optionally select a dual analog input board or a combination sensor/analog input board.
  • Intuition – 9™: These controllers feature up to 24 sensor inputs and 12 relay outputs, and has four I/O slots that allow flexibility in adding analog outputs, sensors, and linear polarization resistance (LPR) corrosion sensors.
  • Wide range of sensors for use in cooling tower and boiler/condensate applications
  • IX- and E-Series metering pumps for all chemical feed.

Controllers

Intuition-9™ Series Water Treatment Controllers

Intuition-9

24 Inputs / 12 Outputs

Intuition-9

Up to 24 inputs
Up to 12 outputs
Remote Communication

Intuition-6™ Series Water Treatment Controllers

Intuition-6

4 Inputs / 6 Outputs

Intuition-6

Up to 4 inputs
6 outputs
Remote Communication

W100W Series Water Treatment Controller

W100W Series

1 Input / 3 Outputs

W100W Series

1 Sensor Input
3 Control Outputs
Economical Wall Mount Design

Cooling Tower & Boiler/Condensate Water Sensors

Cooling Tower CCond

Contacting Conductivity

Cooling Tower CCond

Cooling Tower
Boiler Water and
Condensate Reject Conductivity

Electrodeless Conductivity Sensors

Cooling Tower ECond

Electrodeless Conductivity

Cooling Tower ECond

Cooling Tower
Boiler Water and
Condensate Reject Conductivity

Condensate CCond

Boiler Water

Condensate CCond

Boiler Water

WEL & WDS Series pH/ORP Sensors

WEL pH and ORP Electrodes

WEL Series pH/ORP

Electrodes

WEL Series pH/ORP

Differential pH/ORP Electrodes
Long Lasting and
Reliable Performance.

WDS Series

Differential pH/ORP

WDS Series pH/ORP

Differential pH and ORP
Electrodes for Long-Lasting
and Reliable and Performance.

Disinfection Sensors

Stabilized Bromine

Amperometric Disinfection

Stabilized Bromine

Membrane Sensor
No Costly Reagents
Continuous Measurement Technique

Disinfection Sensors

Membrane Sensors

Amperometric Disinfection

Membrane Sensors

Membrane Style

Non-Membrane Sensors

High Temperature

Non-Membrane Sensors

Non-Membrane
Higher Temps and
Pressure Applications

Pyxis ST-765SS

Non-Membrane

Pyxis ST-765SS

Non-Membrane
Stainless Steel

Other Cooling Tower Sensors

LPR Corrosion Sensor

Dual Corrosion Sensor Input

Walchem Linear Polarization Resistance (LPR)

Dual Corrosion Sensor Input

Fluorometers

Little Dipper 2 Fluorometer

Little Dipper 2

Inline Fluorometer

Little Dipper 2

Inline Fluorometer

Pyxis ST-500W Inline PTSA Fluorometer

Pyxis ST-500

Inline Fluorometer

Pyxis ST-500

Inline Fluorometer
For PTSA or Fluorometers

Pyxis Turbidity Sensors

Pyxis ST-500W

Polymer & Fluorescein

Pyxis ST-500W

Fluorescent Polymers
PTSA & Fluorescent Polymer
Halogen Stable Triazole (HST)

Metering Pumps

EZ Series

Outputs to 6.3 GPH

EZ Series

Simple Microprocessor Control
Outputs to 6.3 GPH

EJ Series

Outputs 3.2 GPH -75 PSI

EJ Series

Simple On/Off -1:1
-3.2 GPH & 75 PSI

EWN Series

Outputs 6.7 GPH -175 PSI

EWN Series

1800:1 Turndown
6.7 GPH – 175 PSI

EHE Series Metering Pumps

EHE Series

Pumps up to 20 GPH

EHE Series

Pumps up to 20 GPH
Capabilities to 150 PSI
Turndown Ratio of 1800:1

IX Series Metering Pumps

IX Series

Diaphragm Pump

IX Series

Digitally Controlled
Direct Drive
Diaphragm Pump
With High Outputs

Cooling Tower & Boiler/Condensate Water Accessories

Multi-Jet Inline Flowmeters

Flow Meters-Inline

Flow Rates 0.22-132 GPM

Flow Meters-Inline

Built-In Flow Stabilizer
Flow Rates – 0.22 to132 GPM

Motorized Ball Valve

Motorized Ball Valve

Torque of 150 in-lbs

Motorized Ball Valve

Non-Reversing Motor

Flow Control Valves

Flow Control Valve

Four-V Port Globe Valves

Flow Control Valve

Micrometer Dial and Pointer
Set within 1/100th of a
Turn of the Handwheel

Paddlewheel Flowmeters

Flow Meter

Paddlewheel

Flow Meters- Paddlewheel

Impeller-Type
Sizes From ½” to 6″

Calibration Columns

Calibration Columns

Verify Pump Output

Calibration Columns

Verify Pump Output
Graduations in Milliliters and GPH

Multi-Function Valves

Multi-Function Valves

Increase Accuracy

Multi-Function Valves

Increase Accuracy and Repeatability

Pre-amplified pH/ORP Electrode

Preamps

Up to 1000 Feet

Preamps

Up to 1000 Feet (305) Meter

pH/ORP/ISE Electrode

Published Literature

  • “Utilizing Fluorescence Monitoring to Improve Control of your Cooling Tower Chemistry,” Association of Water Treaters, Lori McPherson, September 27, 2018
  • “Understanding Options for Your Analytical Sensors,” AWT Annual Conference, San Diego, CA, Lori McPherson, September 10, 2016
  • “Three Ways to Control Chlorine Injection,” Process Cooling & Equipment, Lori McPherson, September 1, 2004.
  • “Understanding Oxidation Reduction Potential (ORP) Systems,” The Analyst – The Voice of the Water Treatment Industry, Lori McPherson, September 1, 2002
  • “Automatic Temperature Compensation for your Boiler Controller,” The Analyst – The Voice of the Water Treatment Industry, Lori McPherson, September 1, 2000