Submersible electrodes are designed for use in drums, open tanks and streams. The flat sensing surface is surrounded by a porous polyethylene reference junction which minimizes fouling. Electrode installation and removal done by a simple ¼ turn quick disconnect. The cable assembly’s cap has ½ MNPT thread, which can be connected to a coupling and support pipe. The pipe allows easy mechanical mounting and protects the cable from the liquid measured. The resulting assembly is lightweight for convenient handling when maintenance is needed. ATC is available as part of the mounting assembly. The flat surface design is well suited for applications with relatively high suspended solids or where flocculation operations require low velocities. Where only low velocities are present and coating is a problem, the electrode can be mounted at a 45° angle facing the flow so as to obtain increased scrubbing action across the measuring surface.