WPH410/420 | pH/ORP Controllers
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An Iwaki America Company WPH410/420 | pH/ORP Controllers OVERVIEW The WPH410/420 Series pH/ORP on-line process controllers are designed for a broad range of industrial, commercial, and municipal water treatment applications. WPH controllers are easily configured to accurately measure pH or mV (ORP) values from Walchem’s WEL and WDS differential combination electrodes, or any conventional combination electrode. A versatile output configuration allows you to program up to four outputs in a variety of control modes. Select from on/off mechanical relays or pulse proportional control for direct connection to metering pumps. The easy-to-use menu format and pre-wired, pre-mounted panel system options make set-up and installation quick and simple. 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 electrode measurements, temperature and relay status. Download log files from the USB stick to a PC at your convenience. It couldn’t be easier! SUMMARY OF KEY BENEFITS Applications Wastewater Plating Cooling Tower Versatility for a Broad Range of Applications Select from pH or ORP measurements and from five output options. Use In-Range to control a solenoid valve to dump a batch treatment tank when measurement value is within limits, or program for Out-of-Range Alarm in waste treatment applications when the measurement value is too high or low. Ideal for Harsh Environments The NEMA 4X enclosure, combined with Walchem’s WEL and WDS electrodes, provides a waterproof system with no BNC connectors exposed to wet or corrosive environments. Built-in Safety Features Programmable output limit timers prevent run-away chemical addition. Digital Interlock Input may be used from a flow switch or level input to prevent chemical addition based on a stagnant sample, or control of an empty batch tank. TA DA Simple, Integrated Data Collection Download stored data from the controller to a USB stick with the press of a button. Use the data to simply and easily validate system performance, document compliance, and reduce liability. The data and event logs show pH/ORP and temperature values, as well as accumulated chemical feed and relay activation times.

WPH410 Series On/Off Control Four control relays may be set as all high, all low or any combination. The control deadband is fully adjustable. pH/ORP Controller AC POWER FLOW OUT FLOW IN SUBMERSION ELECTRODE ACID pH PROBE BASE WPH420 Series Pulse Proportional Control Two pulse outputs that may be set independently, enhanced by an adjustable minimum and maximum pulse per minute setting. WPH410/420 Series | Standard Features pH or ORP Measurement • Configurable via a software menu setting. • Reduces inventory requirements. Self dianostics • Software and electronics are constantly monitored...

Temperature compensation Interlock (optional): Isolated, dry contact closure required (i.e. flow, level, etc.) Measurement Performance Accuracy (calibrated) Temperature Range Mechanical (controller) Enclosure Polycarbonate NEMA Rating Shipping weight liquid crystal Agency Certifications Powered Relays Pulse Outputs Internally powered relays switching line voltage All relays are fused together as one group, total current for this group must not exceed 6A Opto-isolated, Solid state relay Dry contact relays 6 A (resistive), 1/8 HP Dry contact relays are not fuse protected pH/ORP Preamp Power...

ORDER INFORMATION control voltage output options USB CONTROL OUTPUTS 1 = Two powered, three dry contact relays 2 = Two proportional relays, three dry contact relays 3 = 1 20 VAC, prewired, 10 ft. cables with connectors 5 = Hardwired, cable glands 1 = Prewired preamp with 1 0 ft. cable (electrode not included. Electrode should have BNC connector) 2 = Submersion flat pH electrode w/integral preamp 3 = In-line flat pH electrode w/integral preamp (WEL-PHF-22) includes 3/4" NPTF mounting tee 4 = In-line flat pH electrode w/integral preamp (WEL-PHF-22) includes 3/4" flow switch manifold & 'U'...