Measuring and testing – With fluid pressure – Leakage
Patent
1993-05-07
1994-10-18
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 405R, 73 491, 340605, 324533, G01M 316, G01R 3111
Patent
active
053557204
ABSTRACT:
A corrosion resistant cable for use in electrical detection systems for fluid leaks in pipelines and the like includes a central electrical conductor, annular spacer means of electrically insulating material disposed around the central conductor, the annular spacer having a plurality of void spaces for receiving leakage fluid, and an annular sheath disposed around the spacer in concentric relation with the central conductor, the annular spacer formed of a plurality of electrically conductive wires, said wires having a coating of corrosion resistant material for protection against water, acids, alkalis, solvents or other liquids or environmental contaminants that may be present in the vicinity. An uninsulated wire may be incorporated in the sheath to cooperate with an uninsulated central conductor to detect conductive liquids, thereby allowing a leak detection system utilizing the cable to distinguish between leaks of conductive and non-conductive liquids.
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Dombroske George M.
Perma-Pipe, Inc.
Williams Hezron E.
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