The stab survey method records the actual steel potential with periodic stabs every 1 - 3 km. The potential between stabs can be accurately calculated with pipeline attenuation modeling. Deep C Meter software in Stab Survey mode records events and exports a completed survey for the engineers to model.
REMOTE ELECTRODE SURVEY
The remote electrode method calibrates a remote reading with periodic stabs of bare steel along the pipeline. The data is then aligned in post processing. Not as accurate as a stab survey, but required in some regions. Deep C Meter software in Remote mode outputs stab events and the complete set f readings from the proximity electrode for processing.