The Walchem WDP410/ 420/ 440 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!