System and method for calculating chemical usage
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United States of America Patent
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Mar 11, 2008
Grant Date -
Feb 21, 2008
app pub date -
Aug 16, 2006
filing date -
Aug 16, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method of calculating chemical usage during a refilling of a supply tank, which includes the steps of providing a chemical system having a first supply tank of known capacity, wherein the tank is mounted upon an electronic scale. A system controller receives a series of signals from the scale relating to the weight of the tank when empty and at various levels of fill. The first supply tank is filled from a source of chemical feed and the fill time for the filling of the first supply tank is obtained. The system controller inputs the series of signals from the scale relating to the weight of the tank when empty and at various levels of fill and calculates a usage during refilling based on a feed rate times the fill time.
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