Conductivity Controllers

Conductivity process controller WCN600

The Walchem WCN600 offers state-of-the-art technology for automating your water treatment.
In addition to the main parameter, conductivity, the controller supports a multitude of other sensors. Several water circulations can be treated at the same time. Select between mechanical relays or optical-coupler outputs to proportionally control dosing pumps with contact input.

An integrated logging function makes for a complete documentation of the water treatment.

The WCN600 features two universal sensor inputs or up to four 4-20 mA inputs for:

• Conductive conductivity-measuring cells with different cell constants
• Inductive conductivity electrodes
• Fluorescence sensors (for PTSA or fluorescein)
• pH/ORP sensors
• Free chlorine / bromine
• Total chlorine
• Chlorine dioxide
• Ozone
• Hydrogen peroxide
• Peracetic acid
• Any other sensors with output signals ranging from -2000 to +1500 mV

Six digital inputs can be used for different purposes:

• Flow switches or other external contacts for disabling the control
• Water flow meters for dosing chemicals in proportion to quantity

Six relay outputs can be preset to different control modes:

• On/Off set-point
• Dosage based on a water flow meter
• Dosage with switchover between two set-points
• Timer-based activation
• Time-proportional control
• Probe wash
• In-range or out-of-range activation
• Common alarm

Via two optional, insulated analog (4-20 mA) outputs, measured values can be transmitted toward a PLC or any other device. Alternatively, the fluid quantities of dosing pumps can be controlled.

A USB interface is intended to read out the memory, to import/export configuration files and to update the controller software.

An Ethernet board enables remote access via the Internet or LAN.

Conductivity process controller WCN100W (wall mount)

The Walchem WCN100W provides an economical entry and a very flexible way to keep your water treatment program under control.

It features a sensor input compatible with several sensors:

• Conductive conductivity-measuring cells with different cell constants
• Inductive conductivity electrodes

Two digital inputs can be used for different purposes:

• Flow switches or other external contacts for disabling the control
• Water flow meters for dosing chemicals in proportion to quantity

Three relay outputs can be preset to different control modes:

• On/Off set-point
• Dosage in proportion to quantity based on a water flow meter
• Timer-based activation
• Time-proportional control
• Probe wash
• In-range or out-of-range activation
• Common alarm

Via an optional, insulated analog (4-20 mA) output, measured values can be transmitted toward a data logger, a PLC or any other device. Alternatively, the fluid quantity of a dosing pump can be controlled.

A USB interface is intended to update the controller software and to read out diagnostic protocols.

Conductivity process controller WCN100P (panel mount)

The Walchem WCN100P provides an economical entry and a very flexible way to keep your water treatment program under control.

It features a sensor input compatible with several sensors:

• Conductive conductivity-measuring cells with different cell constants
• Inductive conductivity electrodes

One digital input can be used for different purposes:

• Flow switches or other external contacts for disabling the control
• Water flow meters for dosing chemicals in proportion to quantity

Four relay outputs can be preset to different control modes:

• On/Off set-point
• Dosage in proportion to quantity based on a water flow meter
• Timer-based activation
• Time-proportional control
• Probe wash
• In-range or out-of-range activation
• Common alarm

Via an optional, insulated analog (4-20 mA) output, measured values can be transmitted toward a data logger, a PLC or any other device. Alternatively, the fluid quantity of a dosing pump can be controlled.

A Micro-USB interface is intended to update the controller software and to read out diagnostic protocols.