DEVICE FOR LOCATION OF LEAKS IN UNDERGROUND LINES Russian patent published in 1995 - IPC

Abstract RU 2047815 C1

FIELD: underground lines. SUBSTANCE: device is additionally provided with reference signal source connected with one of bridge compensators and frequency filter whose input is connected with electroacoustic transducer and output is connected with low-frequency amplifier. EFFECT: enhanced efficiency. 1 dwg

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RU 2 047 815 C1

Authors

Viglin N.A.

Penzev V.P.

Dates

1995-11-10—Published

1992-11-05—Filed