ORP pH controller
WPH, WDP400 series

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ORP pH controller ORP pH controller - WPH, WDP400 series


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The WPH/WDP400 Series pH/ORP on-line process controllers are designed for a broad range of industrial, commercial, and municipal water treatment applications. WPH/WDP 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.

pH or ORP Measurement
Configurable via a software menu setting
Reduces inventory requirements

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, Out-of-range alarm, Probe wash

Probe wash feature for applications that require frequent electrode cleaning, automatic probe wash stretches out reliable measurement life between maintenance interruptions

4-20mA Output internally powered and fully isolated, for connection to WebAlert, PLC or other devices

Software and electronics are constantly monitored without having to take the controller off-line

Auto buffer recognition software selectable for U.S. or European calibration standards