Controlling chemical dispense operations based on conductivity offset considerations
First Claim
1. In a computer system, a method for controlling concentration of a component chemical product in a chemical solution, the method comprising:
- determining a conductivity measurement for the chemical solution, wherein the conductivity measurement indicates a percent concentration of the component chemical product in the chemical solution;
determining a conductivity offset value that represents a portion of the conductivity measurement that is attributable to one or more constituents of the chemical solution other than the component chemical product; and
analyzing the conductivity offset value, the conductivity measurement and a conductivity setpoint indicating a desired percent concentration of the component chemical product in the chemical solution to determine whether the component chemical product should be added to the chemical solution.
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Accused Products
Abstract
A system and method is disclosed for controlling concentration of a component chemical product in a chemical solution. The chemical solution is formed in a solution tank by combining the component chemical product with water. The component chemical product is dispensed to the solution tank by a chemical dispenser that is controlled by measured conductivity readings of the chemical solution taken in the solution tank. The conductivity readings are analyzed against a conductivity setpoint to determine whether the component chemical product should be added to the chemical solution. A conductivity offset is determined and applied to the analysis thereby taking into consideration any conductivity that may be attributable to constituents of the chemical solution other than the component chemical product. Such constituents include soil washed from the articles and the water used to form the chemical solution.
72 Citations
40 Claims
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1. In a computer system, a method for controlling concentration of a component chemical product in a chemical solution, the method comprising:
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determining a conductivity measurement for the chemical solution, wherein the conductivity measurement indicates a percent concentration of the component chemical product in the chemical solution;
determining a conductivity offset value that represents a portion of the conductivity measurement that is attributable to one or more constituents of the chemical solution other than the component chemical product; and
analyzing the conductivity offset value, the conductivity measurement and a conductivity setpoint indicating a desired percent concentration of the component chemical product in the chemical solution to determine whether the component chemical product should be added to the chemical solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13)
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9. In a computer system, a method for controlling conductivity of a chemical solution contained in a solution tank and used by a utility device to clean and sanitize articles having soil deposited thereon, wherein the utility device applies the chemical solution to the articles thereby washing the soil and applied chemical solution into the solution tank, the method comprising:
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determining a conductivity measurement for the chemical solution, wherein the conductivity measurement indicates a percent concentration of a component chemical product in the chemical solution;
determining a soil conductivity offset value that represents a portion of the conductivity measurement that is attributable to soil mixed into the chemical solution; and
analyzing the soil conductivity offset value, the conductivity measurement and a conductivity setpoint indicating a desired percent concentration of the component chemical product in the chemical solution to determine whether the component chemical product should be added to the chemical solution. - View Dependent Claims (10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A computer program storage device accessible to a computing system and encoding a computer program for executing a computer process for controlling conductivity of a chemical solution contained in a solution tank and used by a utility device to clean and sanitize articles having soil deposited thereon, wherein the utility device applies the chemical solution to the articles thereby washing the soil and applied chemical solution into the solution tank, the method comprising:
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determining a conductivity measurement for the chemical solution, wherein the conductivity measurement indicates a percent concentration of a component chemical product in the chemical solution;
determining a soil conductivity offset value that represents a portion of the conductivity measurement that is attributable to soil mixed into the chemical solution; and
analyzing the soil conductivity offset value, the conductivity measurement and a conductivity setpoint indicating a desired percent concentration of the component chemical product in the chemical solution to determine whether the component chemical product should be added to the chemical solution. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A computer program storage device accessible to a computing system and encoding a computer program for executing a computer process for controlling conductivity of a chemical solution, the method comprising:
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determining a conductivity measurement for the chemical solution, wherein the conductivity measurement indicates a percent concentration of a component chemical product in the chemical solution;
determining a conductivity offset value that represents a portion of the conductivity measurement that is attributable to a component of the chemical solution other than the component chemical product; and
analyzing the conductivity offset value, the conductivity measurement and a conductivity setpoint indicating a desired percent concentration of the component chemical product in the chemical solution to determine whether the component chemical product should be added to the chemical solution. - View Dependent Claims (40)
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Specification