Tank leakage detector

Details Tank leakage detector Tank leakage detector

1985-11-12

1987-01-27

Myracle, Jerry W.

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

73 405R, 73 1H, G01F 2300

Patent

active

046386629

ABSTRACT:
A method and apparatus for detecting a change in the liquid level in a liquid storage tank, such as an underground hydrocarbon storage tank. A gas line is inserted just below the level of the liquid in the tank, and a second interconnected gas line is placed in a small liquid cup located on the surface. The differential pressure between the two lines is measured and used to compute the level in the tank. A second measurement taken hours later reveals any change in level indicating a leak. Provision is made to accurately zero the apparatus at each measurement to insure precision.

REFERENCES:
patent: 867994 (1907-10-01), Murphy
patent: 3230769 (1966-01-01), Carver et al.
patent: 4182178 (1980-01-01), Nolte
patent: 4386524 (1983-06-01), Vest et al.
patent: 4454759 (1984-06-01), Pirkle

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