WEDT410 | Cooling Tower Controllers An Iwaki America Company OVERVIEW The WEDT410 Cooling Tower Controller with electrodeless (toroidal) conductivity sensor represents the latest in technological and innovative advancements from Walchem. The electrodeless sensor is impervious to contamination by oils, scale, biofilm, or other coatings, resulting in a low maintenance system that provides reliable, effective control. All of the standard features you’d expect in a conventional cooling tower controller are included, plus optional simple-to-use information management tools that enable water treatment professionals to deliver more effective service to their customers. The WEDT410 controllers have the ability to store conductivity, pH/ORP and temperature , values, water usage, relay and flow switch status, and user settings. A USB stick is all that’s needed to extract the information. Download logs from the USB stick to a PC at your convenience, or copy your preferred treatment program from to another controller to speed start-up. It couldn’t be easier! SUMMARY OF KEY BENEFITS Ensures Optimal Performance and Maximum Efficiency Precise control of conductivity and chemical feed reduces water consumption and inhibits corrosion, solids precipitation, scale build-up and growth of algae or dangerous bacteria. $ Spend More Time Selling Electrodeless conductivity sensor is impervious to contamination and coatings, which means you’ll spend less time cleaning and calibrating sensors and spend more time selling! Efficient Customer Service Quickly identify system upsets by knowing exactly what happened and when. An event log can be downloaded to tell you precisely when pumps turned on, valves opened, and when there was flow or no-flow. More Informative Monthly Reports Download stored data from the controller to a USB flash stick. Use the data to easily develop reports that validate and verify water treatment results, and include actual water usage, system conductivity, temperature, and accumulated chemical feed and bleed times. Save Time Copy the user settings from your controller to a USB flash stick and upload to a new controller. Programming your new controller this way can be accomplished in seconds. It’s that simple!

WEDT410 Series | Feed and Bleed Cooling Tower Controller with Dual Biocide Timers Four chemical feed options • Feed & bleed, with or without feed lockout timer • Feed after bleed has finished, as a percentage of time • Feed as a percentage of time elapsed • Feed as a percentage of make-up water Alarm Output Relay • Triggered by low conductivity, high conductivity, no-flow conditions, bleed timeout, sensor error, and temperature error Self-Diagnostics • Software, electronics, and sensor are constantly monitored without having to take controller offline. Conductivity Sensor • Electrodeless, temperature...

SAMPLE VALVE Cond Sensor: 1.0 cell factor, 1 OK thermistor Requires a preamplified signal. Walchem WEL series recommended. ±5V power available for external preamp Note: Temperature compensation for pH input is accomplished using the conductivity sensor temp element. ORP measurement does not use temp comp. Flow Meter: Isolated, dry contact closure required (optional) (i.e. relay, reed switch) Flow Switch: Isolated, dry contact closure required (optional) (i.e. reed switch) Mechanical Relays WEDT41 0: Six powered relays (Bleed, Feed, Bio 1, Bio 2, pH/ORP Alarm) All relays are fused together as...

ORDER INFORMATION voltage output sensor USB WebMasterONE is the most advanced online cooling tower and boiler controller in the water treatment industry. The flexible multi-l/O platform allows you to control multiple cooling towers, boilers, closed loops, and condensate lines with just one controller. An extensive assortment of integrated communications and data handling features are included that enable water treatment professional to provide more effective water management services to their customers. 5 = 100-240 VAC, hardwired, cable glands 4 = Single isolated 4-20 mA output Metering Pumps...