Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1990-07-02
1991-11-12
Cuchlinski, Jr., William A.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73301, 73290R, G01F 2322, G01F 2300
Patent
active
050637789
ABSTRACT:
A self-contained, submerged aparatus for monitoring the height of a liquid in a wetwell includes a tube defining an upright conduit, a first chamber at the bottom of the conduit and communicating with it, a second chamber adjacent the first chamber and separated from it by a first impervious non-rigid membrane, the second chamber being defined in part by a second impervious non-rigid membrane in contact with the liquid in the wetwell. The second chamber contains a first liquid to which the membranes are inert, and the first chamber contains a second liquid to which the first membrane is inert. Pressure from the liquid in the wetwell exerted against the first membrane is transmitted to the second membrane and causes the second liquid to rise in the tube. The top of the tube is vented to the atmosphere, and a plurality of electrical terminals disposed at spaced locations lengthwise of the tube are provided for producing a signal which is a function of the height of the second liquid in the conduit.
REFERENCES:
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patent: 4722228 (1988-02-01), Awa et al.
patent: 4954724 (1990-09-01), Koda et al.
Cuchlinski Jr. William A.
Gutierrez Diego F. F.
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