Measuring and testing – With fluid pressure – Leakage
Patent
1998-08-12
2000-06-06
Williams, Hezron
Measuring and testing
With fluid pressure
Leakage
73 454, G01M 308, G01M 304
Patent
active
060704535
ABSTRACT:
A method and system for detecting leaks in a fuel dispenser is operative to pneumatically pressurize a selectable one of a vapor recovery portion and a fuel dispensing portion using a compressed air flow. A flowmeter measures the flow rate of the compressed air communicated to the fuel dispenser for pressurization thereof. A processor provides an indication of the leakage condition of the fuel dispenser based upon the pneumatic flow rate measured by the flowmeter which satisfies a pressurization condition for the fuel dispenser, such as maintaining the pressurization level above a threshold value. The flow rate of compressed air needed to maintain this pressurization level is indicative of the leak rate.
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Knuth Randall J.
Politzer Jay L.
Tokheim Corporation
Williams Hezron
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