The ERE-Probe (Embeddable Reference Electrode) is a stable, long life reference manganese dioxide electrode for monitoring the half-cell potential of reinforcement in concrete structures.
In new structures, the ERE-Probe is attached to the reinforcement by plastic straps before placement of the concrete. In existing structures, a hole is drilled to the required depth and the ERE-Probe is embedded using an appropriate cementitious mortar. The probe can be used for concrete exposed to chlorides or carbonation and will not induce corrosion or change the natural potential of the steel. A high impedance voltmeter is connected to the cable and used to measure the half-cell potential between the probe and the reinforcement.
Corrosion potential monitoring.