A leak detection apparatus is shown for monitoring leakage from household water systems. Upon detection of a leak, the water supply valve is automatically shut off. A pair of spaced apart wires are imbedded in an insulating tape with liquid cell sensor elements formed at spaced intervals about uninsulated...http://www.google.de/patents/US5190069?utm_source=gb-gplus-sharePatent US5190069 - Apparatus and method for detecting leaks
