Boiler Water Controllers

Boiler controller WBL600

The Walchem WBL600 offers state-of-the-art technology for controlling your boiler water and condensate treatment. The controller can treat up to two boilers at the same time. It supports continuous and discontinuous sampling.

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

The WBL600 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)

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
• Blowdown or dosage based on a water flow meter
• Dosage as a percentage of the blowdown
• Biocide timer-based activation with preliminary blowdown and blowdown lock
• 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.

Boiler controller WBL100

The Walchem WBL100 provides an economical entry and a very flexible way to keep your boiler water and condensate treatment 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
• Intermittent sampling for boilers with proportional blowdown, control with a locked-in sample
• Blowdown or dosage based on a water flow meter
• Dosage as a percentage of the blowdown
• Biocide timer-based activation with preliminary blowdown and blowdown lock
• 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.

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