PIPELINE POLARISATION POTENTIAL MEASURING UNIT Russian patent published in 2009 - IPC C23F13/00 

FIELD: electricity.

SUBSTANCE: unit may be used in oil and gas industry to define pipeline protection degree when cathode protection by superimposed current is ensured. The unit is represented with a probe with its measuring part consisting of comparison electrode and metal auxiliary electrode connected to the pipeline and coated with insulating material except working surface. The probe is provided with a hole having capillary inserted. One end of the capillary is extended to the working surface of the auxiliary electrode and situated on the same level as the above surface. The capillary is filled with electrolyte. The comparison electrode is located on the end of capillary. The auxiliary electrode is metal similar to the pipeline metal. Perforated non-conducting shield is mounted above the working surface of electrode. Electrolyte is in the form of gel.

EFFECT: high accuracy of measurements.

2 cl, 1 dwg, 1 ex