Level detection head for hydrostatic effect with protection

Details Level detection head for hydrostatic effect with protection Level detection head for hydrostatic effect with protection

1983-03-02

1985-11-26

Stephan, Steven L.

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

73721, 73706, 137557, 137558, G01F 2314

Patent

active

045548307

ABSTRACT:
The head for the hydrostatic detection of a liquid level includes a main enclosure which is divided by a membrane into two chambers, one of which communicates with a supply of air under pressure, while the other is joined to a probe that is immersed deeply into the liquid. That connection is made, in this case, by the intermediary of an auxiliary enclosure that also contains a primary chamber that communicates with the inlet of the air under pressure, and a secondary chamber which is separated from the primary chamber by a membrane. That membrane forms one piece with a valve mounted between the chamber and a small connecting conduit connected with a probe, which prevents any ill-timed rise of the liquid inside the device, in the case of the disappearance of the compressed-air supply, and which makes it possible, at the same time, to install the detector head above the tank.

REFERENCES:
patent: 2981110 (1961-04-01), Fenn et al.
patent: 4295117 (1981-10-01), Lake et al.
patent: 4301685 (1981-11-01), Guillemot
patent: 4326423 (1982-04-01), Hartemann
patent: 4409833 (1983-10-01), Thomson et al.
Fluidic/Pneumatic Level Measurement of Cryogenic Fluids, Edward Samuels (President) Sepctrum Products, Inc., 1976.

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