Positive displacement pump apparatus and methods for detection o

Details Positive displacement pump apparatus and methods for detection o Positive displacement pump apparatus and methods for detection o

1990-08-30

1992-02-25

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 405R, 73 492, G01M 326

Patent

active

050902342

ABSTRACT:
The positive-displacement pump apparatus and method for detection of leaks in pressurized pipelines disclosed herein measures volume changes at different pressures to determine thermally compensated leak rates. The apparatus uses a positive-displacement pump apparatus to precisely determine volume changes.

REFERENCES:
patent: 3910102 (1975-10-01), McLean
patent: 4090394 (1978-05-01), Herman et al.
patent: 4103537 (1978-08-01), Victor
patent: 4590793 (1986-05-01), Staats, Jr.
patent: 4608857 (1986-09-01), Mertens
patent: 4918968 (1990-04-01), Hoffman
patent: 4986113 (1991-01-01), Harrison et al.

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