Electricity: measuring and testing – Electrolyte properties
Patent
1984-10-09
1987-02-17
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Electrolyte properties
324439, 204147, 204196, 204404, 204400, 204 1T, G01N 2742
Patent
active
046442855
ABSTRACT:
In a cathodic protection system for protecting a metal structure in contact with a surrounding electrolytic medium, method and apparatus are provided for directly measuring current density. A small metal sample cathode of a like material as the metal structure having a predetermined surface area exposed to the electrolytic medium is located adjacent the surface of the metal structure. A direct electrical path is completed between the sample cathode and the metal structure that is substantially IR free. At least a portion of the electrical path between the sample cathode and the metal structure is insulated from the surrounding electrolytic medium and the metal structure. A voltage directly proportional to the current passing through the electrical path is generated by disposing a toroidal coil in the insulated space by detecting the flux field associated with the current flow through the sample cathode.
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A. D. Goolsby, "The Results of Monitoring Platform ELLEN Cathodic Protection for Two Years", Materials Performance, Apr. 1984.
Eisenzopf Reinhard J.
Mueller Robert W.
Springs Darryl M.
Wayne Graham & Associates International, Inc.
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