Foam controller
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United States of America Patent
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Nov 25, 1986
Grant Date -
N/A
app pub date -
Aug 31, 1984
filing date -
Aug 31, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for controlling the rate at which a defoaming agent is supplied to a processing vessel. A first sensing element senses the quantity of liquid in the vessel. A second sensing element senses the position of the upper surface of the foam. A signal processing circuit combines the outputs of the first and second sensing elements to produce a signal that is used to optimize the rate at which defoaming agent is supplied to the vessel. In this manner, the amount of defoaming agent that is used is reduced, thereby reducing the cost of operating the process.
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