DEVICE FOR MEASUREMENT OF POLARIZATION POTENTIAL OF UNDERGROUND METAL STRUCTURES Russian patent published in 1998 - IPC

FIELD: monitoring of polarization potential of steel underground pipelines with electrochemical protection; may be used in determination of polarization potentials of structures without special measurement points. SUBSTANCE: device is made in the form of probe whose measuring part consists of comparison electrode and auxiliary electrode. The device is a sleeve filled with electrolyte and closed with cover made of dielectric material. Auxiliary electrode is accommodated inside the sleeve and is continuously connected during measurement to structure. Auxiliary electrode is a flat steel ring with porous diaphragm in the middle. Comparison electrode is located between sleeve cover and auxiliary electrode. Polarizing electrode is attached between auxiliary electrode and porous sealed end connected to sleeve bottom and filled with ground. Space between auxiliary electrode and sealed end is also filled with ground. EFFECT: higher efficiency. 3 dwg