Cathodic protection monitoring apparatus for marine propulsion d

Details Cathodic protection monitoring apparatus for marine propulsion d Cathodic protection monitoring apparatus for marine propulsion d

1974-07-17

1976-04-27

Smith, Jr., David

Electrical transmission or interconnection systems

Anti-electrolysis

204196, H01B 728

Patent

active

039537420

ABSTRACT:
A cathodic protection system monitor is coupled to an impressed current cathodic protection circuit used for corrosion protection of a submerged marine drive. The cathodic protection circuit includes one or more anodes and a reference electrode mounted below the water line and connected to an automatic controller for supplying an anode current which is regulated in order to maintain a predetermined reference potential on the protected structure. A switch selectively connects a light emitting diode (LED) lamp or other light source between the controller output and ground so that the controller current may, when tested, be used to operate the light source in order to confirm that power is available to the anode.

REFERENCES:
patent: 3242064 (1966-03-01), Byrne
patent: 3327214 (1967-06-01), Allen et al.

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