Measuring and testing – With fluid pressure – Leakage
Patent
1993-10-25
1994-11-29
Noland, Thomas P.
Measuring and testing
With fluid pressure
Leakage
73 40, 73 37, G01M 326, G01M 300
Patent
active
053677978
ABSTRACT:
Establishing that pressure-influencing factors other than leakage of gas have stabilized before testing the integrity of a vessel in a system including the vessel, a reference vessel that can be connected to and isolated from the vessel, a common source of pressurized gas, a gauge to measure the difference between the vessel pressure and the reference vessel pressure and a computer capable of recording a series of pressure-difference measurements and mathematically manipulating them, the method including equalizing the pressures in the two vessels, then isolating them from each other for a preselected time period, then recording the pressure difference between them at the end of the time period, again equalizing the pressures and repeating that sequence until the pressure difference at the end of two consecutive time intervals is the same, thereby establishing that pressure-influencing factors other than leakage have stabilized.
REFERENCES:
patent: 3800586 (1974-03-01), Delatorre et al.
patent: 4670847 (1987-06-01), Furuse
patent: 4811252 (1989-03-01), Furuse
patent: 4899573 (1990-02-01), Dimmick et al.
patent: 4947352 (1990-08-01), Jenkins
patent: 4993256 (1991-02-01), Fukuda
patent: 5078006 (1992-01-01), Maresca, Jr. et al.
Grunewald Glen R.
Noland Thomas P.
Omega Environmental, Inc.
Wiggins John David
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