pH/ORP Controllers

The Walchem Series pH/ORP on-line process controllers are designed for a broad range of industrial, commercial, and municipal water treatment applications. Walchem 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 or touch screen. 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

Self test menu simulates pH and temperature signals, allowing for quick diagnostics of sensor or controller problems

Differential pH
Walchem’s WEL pH/ORP sensors offer extremely reliable differential measurements immune to any ground loop problems

USB Flashstick Support standard for data logs, event/relay and reset logs, and user configuration file import/export

Datalogging
Ethernet option for remote access via the Internet or LAN


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