Control system for electrochemical protection on submersible met

Details Control system for electrochemical protection on submersible met Control system for electrochemical protection on submersible met

1987-02-18

1989-05-02

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204400, 204404, 204196, 204147, 307 95, 340856, C23F 1300

Patent

active

048265772

ABSTRACT:
A method and device for automatic surveillance of electrochemical protection on submersible metal structures. The difference in electric potential between the steel structure and at least one electrode, in contact with the ambient water, is detected with a supply of electric alternating current, via the steel structure and a parallel, insulated conductor. The detected values are transmitted to a central monitoring unit recording said values, via said steel structure and said conductor, as a pulse coded signal, superposed upon the supply current, which acts as a system clock.

REFERENCES:
patent: 3351545 (1967-11-01), Heuze
patent: 3930220 (1975-12-01), Shawhan
patent: 3990478 (1976-11-01), McFarland
patent: 4090170 (1978-05-01), Lincklaen-Arriens et al.
patent: 4178579 (1979-12-01), McGibbeny et al.
patent: 4583093 (1986-04-01), Beals
patent: 4584675 (1986-04-01), Peppers
patent: 4631536 (1986-12-01), Ward et al.

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