POINT-OF-USE PROCESS CONTROL BLENDER SYSTEMS AND CORRESPONDING METHODS
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United States of America Patent
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Issued Date -
Nov 29, 2012
app pub date -
Aug 10, 2012
filing date -
Apr 16, 1998
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A blender system is provided that maintains a chemical solution bath at desired concentrations. The blender system includes a blender unit configured to receive and blend at least two chemical compounds and deliver a solution including a mixture of compounds at selected concentrations to a tank that retains a selected volume of a chemical solution bath. The blender system further includes a controller configured to maintain at least one compound within a selected concentration range in the chemical solution bath. The controller controls at least one of operation of the blender unit to maintain the concentration of the compound within a selected concentration range within the solution delivered to the tank, and a change in flow rate of solution into and out of the tank when a concentration of the compound within the chemical solution bath falls outside of a target range.
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