Walchem’s WEL Series electrodes are cost-effective differential pH and ORP electrodes for industrial applications. They are modular in design with a rugged CPVC housing which contains the electronics; pH and ORP cartridges can easily be connected or replaced in
minutes without tools. The cartridges feature a unique threaded interlock connection and a double o-ring seal, ensuring a watertight fit and secure seating at all times. The optional differential preamplifier and temperature compensation element are in the housing, placing them at the optimal location for best response.