Measuring and testing – With fluid pressure – Leakage
Patent
1986-10-03
1987-12-29
Levy, Stewart J.
Measuring and testing
With fluid pressure
Leakage
364552, 73 40, G01M 326
Patent
active
047152141
ABSTRACT:
A method and apparatus for quickly determining leakage in pressurized fluid receptors. Pressure determinations are made substantially immediately following the completion of the filling of the item to be tested with the pressurized fluid without the need for a stabilization period. The complete decay curve is calculated from the pressure determinations. A time constant is determined from the curves defined when no leakage is present and is utilized in determining the leakage rate whenever the two curves defined by the pressure points provide different end pressure values. The determinations may be made by conventional microprocessor-based instrumentation to provide a substantial increase in the rate of conducting fluid leakage tests.
REFERENCES:
patent: 3962905 (1976-06-01), Jouve
patent: 4078421 (1978-03-01), Gastaldo et al.
patent: 4449392 (1984-05-01), Huschke
patent: 4587619 (1986-05-01), Converse, III et al.
patent: 4608857 (1986-09-01), Mertens et al.
Miller Wayne A.
Tveter Richard S.
Levy Stewart J.
S. Himmelstein and Company
Williams Hezron E.
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