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An Iwaki America Company

Disinfection Controllers
WDIS410 Series

OVERVIEW
Walchem’s WDIS Series controller will reliably and economically control your water treatment disinfection process. The controller includes four standard sensor input options (free chlorine/bromine, chlorine dioxide, ozone, peracetic acid) or can be configured to use a variety of other types or ranges of Walchemdisinfection sensors, such as hydrogen peroxide or total chlorine. The WDIS Series controller takes the guesswork out of your disinfection process. The chemical concentration is continuously monitored and controlled to the precise range required for proper system control and regulatory compliance. Designed to be flexible and versatile, the WDIS Series controller is the ideal solution for disinfectionapplications in cooling towers, food & beverage, drinking water, wastewater and swimming pools. Integrated datalogging is available to validate system performance. A USB memory stick is all that’s needed to extract data and event logs that include disinfection sensor measurements and relay status. Download log files from the USB stick to a PC at your convenience. It couldn’t be easier!

SUMMARYOF KEY BENEFITS
Versatility for a Broad Range of Applications Choose from four standard industrial grade sensors in one controller (chlorine/bromine, chlorine dioxide, ozone, peracetic acid) or configure the controller to use a variety of other disinfection sensors. Relays can be configured for Hi Alarm, Low Alarm, Out-of-Range Alarm, In-Range Output or Probe Wash, providing unmatchedflexibility. Economical and Simple to Use WDIS controllers are economically priced and do not require any costly reagents. The rugged NEMA 4X enclosure and panel mounted flow assembly has only two process connections for quick and easy installation. Built-in Safety Features Programmable output limit timers prevent run-away chemical addition. Digital Interlock Input may be used from a flow switch or levelinput to prevent chemical addition based on a stagnant sample, or control of an empty batch tank. The alarm relay notifies plant personnel of alarm conditions as soon as they occur.

Simple, Integrated Data Collection Download stored data from the controller to a USB stick. Use the data to simply and easily validate system performance, document compliance and reduce liability. The data and eventlogs logs show disinfection levels, as well as accumulated chemical feed and relay activation times.

WDIS410 Series | Disinfection Controllers
Versatile relay configuration • Control outputs can be set as high or low set points via keypad. Auxiliary outputs can be set as: • High alarm • Low alarm • In-range output • Probe wash • Out of range alarm Probe wash feature • For applications thatrequire frequent electrode cleaning, automatic probe wash extends the time between maintenance interruptions Programmable access code • Secures set point parameters and prevents unauthorized use. Program any four digit access number or disable the code requirement. Display status at a glance • Look at any set point without interrupting control or entering an access code. Top level view: • Analog graphrelative to set point • Disinfection sensor values • Status of alarms, outputs Self diagnostics • Software and electronics are constantly monitored without having to take the controller off-line. Any error messages are clearly displayed. A fifth relay is activated by any diagnostics failures. USB Flashstick Support • Standard for data logs, event/relay and reset logs, and user configuration fileimport/export

Standard Disinfection Sensors | Free Chlorine/Bromine • Chlorine Dioxide • Peracetic Acid • Ozone
Long-lasting amperometric electrode with rugged membrane Integrated temperature compensation Excellent long-term stability Free Chlorine /Bromine Chlorine and Bromine are the most common disinfectants used in water treatment. They’re readily available, inexpensive, and typically...