FIELD: the invention refers to measuring technique and may be used in the systems of cathode protection of pipelines.
SUBSTANCE: for achieving of the given result it is necessary with the help of a generator to feed an electric signal on the pipeline and register changes in the signal with a recording instrument. For the pipeline, equipped with a chuck, in quality of a generator they use generator with a frequency of more 100 hertz. One outlet of the generator is connected to the pipeline. And the other - to the chuck. The recording instrument of the device is transferred along the pipeline in the gap between it and the chuck and the changing of the tension of the alternate magnetic field on separate sections is measured.
EFFECT: reducing of man-hours.
3 cl, 4 dwg
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