Measuring and testing – With fluid pressure – Leakage
Patent
1993-04-23
1994-12-13
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
340605, 364558, G01M 326
Patent
active
053720326
ABSTRACT:
A line leak detector system that requires no existing piping modifiction for installation. The system consists of a controller and transducer and installs at existing fuel dispensers. The two components are connected by a length of electrical cable. The invention detects leaks in underground pressurized piping systems for fuel products and other incompressible liquids. The system performs three levels of leak detection, broken pipe, 3 gph and 0.2 gph. Existing piping system variables relating to bulk modulus, variable pump off pressure and thermal differential between fuel and piping with surrounding soil influence, are compensated for. The status of the leak test is reported by encoded lights and horn. In various combination of flash, blink and steady state lights, plus chirp or audible horn. The transducer and cable are intrinsic safe, permitting installation in hazardous environments. The system permits selection of functional modes, thereby making the system able to report leak status to existing underground fuel tank inventory systems.
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Filippi Ernest A.
Miller Kenneth L.
Roskos Joseph W.
Williams Hezron E.
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