Liquid level monitoring device

Details Liquid level monitoring device Liquid level monitoring device

1980-12-03

1983-02-15

Kazenske, Edward R.

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

G01F 2318

Patent

active

043733883

ABSTRACT:
A liquid level monitoring device includes a casing arranged to be immersed in liquid stored within a container, the casing having first and second ports and being integrally provided with a support member to be attached to the inner wall of the container. A flexible diaphragm is assembled to form first and second chambers in the casing, the first chamber being communicated with the atmospheric air through the first port from which an elongated tube extends into the exterior of the container, and the second chamber permitting the immerse of liquid through the second port thereinto such that an amount of the atmospheric air is compressed within the second chamber in dependence upon an amount of the stored liquid to flex the diaphragm by a pressure difference between the chambers. A pressure transducer is provided to detect the rate of flexure of the diaphragm so as to generate an electric signal indicative of the liquid surface level from a control circuit. An indicator is responsive to the electric signal from the control circuit to indicate the stored liquid surface level.

REFERENCES:
patent: 2361738 (1944-10-01), Bird
patent: 3286523 (1966-11-01), Barrows et al.
patent: 4112760 (1978-09-01), Ishiwata
patent: 4227410 (1980-10-01), Ruben et al.

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