Detection of step charges of pressure in vessels and apparatus t

Details Detection of step charges of pressure in vessels and apparatus t Detection of step charges of pressure in vessels and apparatus t

1981-11-09

1987-11-17

Levy, Stewart J.

Measuring and testing

Fluid pressure gauge

Diaphragm

73 405R, G01L 702

Patent

active

047065010

ABSTRACT:
Detectors for monitoring step changes of pressure in a vessel, for example a pipeline, include sensors outside the vessel for detecting a change in its dimensions resulting from a fall in pressure occurring at a minimum rate of 0.005 bars per second which is not followed by a corresponding rise in pressure within 0.05 seconds. They are useful in detecting leaks.

REFERENCES:
patent: 3603152 (1971-09-01), Alibert et al.
patent: 3898885 (1975-08-01), Russell
patent: 4174637 (1979-11-01), Mulzet et al.
patent: 4194401 (1980-03-01), Claassen et al.

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