Liquid level control

Details Liquid level control Liquid level control

1984-12-21

1987-04-28

Chambers, A. Michael

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137386, 137392, 222 56, 340620, 364509, 25112905, F16K 3104

Patent

active

046605860

ABSTRACT:
An apparatus for controlling liquid level, comprising containment means for containing and dispensing liquid, flow varying means operable for varying flow of liquid into the containment means, stepper motor means for operating the flow varying means, sensor means for sensing level of liquid in the containment means, and PDD controller means connected between the sensor means and the stepper motor means for controlling liquid level.

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patent: 3671142 (1972-06-01), Calabrese
patent: 3730695 (1973-05-01), Varrasso
patent: 4244385 (1981-01-01), Hotine
patent: 4265262 (1981-05-01), Hotine
patent: 4416153 (1983-11-01), Williams
patent: 4513616 (1985-04-01), Bezard et al.

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