Controlling chemical dispense operations based on conductivity offset

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United States of America Patent

PATENT NO 6892143
APP PUB NO 20040236522A1
SERIAL NO

10444823

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A system and method is disclosed for controlling chemical dispense operations based on a conductivity offset determined for a chemical solution. The chemical dispense operations are performed by or in conjunction with operation of a utility device, such as a warewashing machine. The chemical solution is formed in a solution tank device by combining water with at least one component chemical product. The conductivity offset, which is the conductivity of the water, is used to normalize the conductivity estimated for the chemical solution relative to the component chemical product in the solution. During various points in time during operation of the utility device, the normalized conductivity is compared to a conductivity setpoint, and if the normalized conductivity falls below the conductivity setpoint, a specified volume of the component chemical product is supplied to the solution tank.

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Patent Owner(s)

Patent OwnerAddress
ECOLAB USA INC1 ECOLAB PLACE ST PAUL MN 55102

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Howes, Jr Ronald Bruce Minneapolis, MN 5 118
May, Robert Eugene Lakeville, MN 6 62
Peterson, Jeff W Hudson, WI 23 660

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