Method and device for detecting the location of a fault within a

Details Method and device for detecting the location of a fault within a Method and device for detecting the location of a fault within a

1988-06-13

1990-03-27

Eisenzopf, Reinhard J.

Electricity: measuring and testing

For insulation fault of noncircuit elements

324559, 324514, G01M 316, G01R 3112

Patent

active

049124188

ABSTRACT:
A method and a measuring device for localizing a damage in a dielectric corrosion resistant layer of a pipe line are described, especially for an enameled pipe line, through which an electrolytically conducting fluid is passed. Localization is achieved by performing a potential difference measurement between two electrodes arranged at the begining and at the end of a supervised region along the length of the pipe line, to which preferably a constant current source is connected, the positive terminal of which is connected with the carrier material of the pipe line and the negative terminal of which is connected with the two electrodes. Preverably a calibration is performed by means of an additional electrode, which can be connected to the measurement region.

REFERENCES:
patent: 3365661 (1968-01-01), Zimmerman
patent: 3555414 (1971-01-01), Deichelmann
patent: 3800217 (1974-03-01), Lowrance
patent: 4161688 (1979-07-01), Nakayama

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