Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1993-02-26
1995-01-10
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324555, 73 40, 174 47, G01R 3108
Patent
active
053810970
ABSTRACT:
A liquid leakage detector line is provided with a coating layer having at least liquid-absorbent properties and disposed at the outer periphery of a core which contains a pair of wiry electrodes disposed nearly parallel with each other, wherein the wiry electrodes comprise conductors which are extrusion coated with a polyester elastomer as an insulator. The liquid leakage detector line has excellent mechanical strength, rubber elasticity, resistance to fatigue from flexing and crack propagation resistance, and is free from the occurrence of pinholes, crazings, etc. inside the insulator during production and laying due to external forces applied to the wiry electrodes, such as pressure, tensile force, bending, and the like. As a result, erroneous actuation due to rainfall, etc. does not occur, and the time required to detect the sulfuric acid or other liquid to be detected has little dependence on the temperature, and short detection times for leaking liquid are possible even at low temperatures.
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Ishihara Akihiro
Ishizaka Masuo
Kawakami Yoshinori
Masui Tadaaki
Okumura Takahisa
Brown Glenn W.
Tatsuta Electric Wire & Cable Co., Ltd.
Wieder Kenneth A.
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