This mode measures the electrical potential between the rebar and a reference electrode (copper/copper sulfate). The stresses adherence to ASTM C876.
The Proceq Profometer 4 is a foundational eddy-current testing instrument designed for non-destructive concrete analysis. Concrete scanning professionals use this device to locate reinforcing bars (rebars), measure concrete cover depth, and estimate rebar diameters. proceq profometer 4 manual