Walchem ​​controllers and sensors

In today’s industry, there have been changes that demand highly versatile solutions prepared to correct fluctuating operations, together with the requirement to be easy to handle and compact in design. All these advantages of automation are found in a highly reliable solution with the use of Walchem Controllers and Sensors, since you can keep an infinite number of process parameters under control, even remotely online from anywhere in the world with Internet access.



Connect with Walchem ​​W900 series controllers and enjoy unmatched versatility and connectivity to keep your process and water treatment options in tip-top shape. Now with newly expanded capabilities, powerful control, Wi-Fi, BACnet, graphical reports both on-screen and on the web page of sensor values ​​and control output status, flexible programming, online access, easy configuration, and great value.

It features the largest touchscreen on the market with an icon-based interface, while the universal sensor input provides extraordinary flexibility. Four input and output slots allow complete flexibility when adding additional sensors.


  • The large touch screen with icon-based programming makes setup easy.
  • The universal sensor input provides extraordinary flexibility. Four input and output slots allow complete flexibility when adding additional sensors.
  • Multiple language support allows for simple setup.
  • Eight relay control outputs allow the controller to be used in more water treatment applications.
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A large touch screen with icon-based programming makes setup easy. It is available in multiple languages with six control outputs and universal sensor input that provides extraordinary flexibility since the same controller can be used with almost any type of sensor (analytical sensors that measure pH, ORP, conductivity, fluorescence or others, and a flow measurement input). The W600 series provides reliable control to keep your water treatment program under control.


Three powerful control outputs make the Walchem W100W controller a more versatile and valuable option compared to other basic water treatment controllers available on the market.


  • A large screen with icon-based programming and a choice of multiple languages make the setup simpler.
  • A universal sensor input that provides extraordinary flexibility. The same controller can be used with almost any type of sensor needed.



Amperometric Disinfection Sensors offer a cost-effective and reliable solution for all your disinfection control needs.

We offer sensors in different concentration ranges for free chlorine/bromine, total chlorine, chlorine dioxide, peracetic acid, ozone, and hydrogen peroxide. If the application is in a cooling tower, food and beverage, swimming pools, or potable or wastewater, these sensors are the ideal and effective solution.

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The Little Dipper 2 (LD2) and Pyxis In-Line Fluorometers are robust 24/7 sampling devices, offering maximum performance, minimal maintenance, and robust reliability.


Contact conductivity sensors are ideal for use in cooling towers, boilers, reverse osmosis equipment, and other non-oily applications. A variety of cell constants are available to handle a wide range of applications.


They are available as an input/output card option for the WCT900 series controllers. Each card provides two (2) LPR sensor inputs to measure and control the corrosion rate and unbalance or pitting of two (2) different alloys in a tower. Superior 4-wire design.


Electrodeless conductivity sensors can be installed in a variety of difficult chemical control applications, including greasy cleaner baths, chromates, tank rinses, gas scrubbers, and other concentrated chemicals up to 1000 mS/cm conductivity. . (The range varies with the temperature of the solution.)


Copper & Nickel Sensors are optoelectronic online analyzers designed for use in electrolytic copper/nickel baths and Microetch baths containing more than 0.10 grams/liter (g / L) of copper or nickel ions. Submersible copper sensors are available for direct monitoring in the solution tank or through flow-through sensors that are designed for control at the outlet of the tank.


The WFM series water meters have earned a reputation for simplicity of design, range of applications, and accuracy in poor quality water. The WFM series uses the widely recognized multi-jet principle, which has been accepted as an international standard for many years. These meters are available with either a two-wire reed switch, or a three-wire, solid-state Hall effect sensor.


Cost effective pH/ORP electrodes to meet industrial and municipal applications efficiently and with high precision.


Differential electrodes use two electrodes, one for process measurement and one for reference measurement. Signal transmission up to 3000 feet (915 meters) and temperatures up to 95 ° C.


  • PH neutralization.
  • Disinfection for the treatment of water, food, beverages, municipal and private pools.
  • Boiler and cooling tower automation.
  • Metal treatment & Printed circuits.
  • Reverse Osmosis chemical dosing systems.
  • Control of conductivity in rejected water.
  • Preparation of reagents by conductivity.

Contact a specialist

Raul Chacaltana

Commercial manager
+51 996 800 977
[email protected]


+51 631 6868
[email protected]


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