公开(公告)号：AU2004244177B2

公开(公告)日：2010-09-16

申请号：AU2004244177

申请日：2004-04-20

Applicant: ECOLAB INC

Inventor： HOWES RONALD BRUCE JR ,  MAY ROBERT EUGENE ,  PETERSON JEFF W

IPC: G05D11/13 ,  A47L15/00 ,  A47L15/42 ,  A47L15/44 ,  A47L15/46 ,  D06F39/00 ,  G01N27/06

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.

公开(公告)号：AU2004244177A1

公开(公告)日：2004-12-09

申请号：AU2004244177

申请日：2004-04-20

Applicant: ECOLAB INC

Inventor： HOWES RONALD BRUCE JR ,  MAY ROBERT EUGENE ,  PETERSON JEFF W

IPC: A47L15/00 ,  A47L15/42 ,  A47L15/44 ,  A47L15/46 ,  D06F39/00 ,  G01N27/06 ,  G05D11/13 ,  G05D11/00 ,  G05D21/02 ,  G01R27/22

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.

公开(公告)号：CA2524364C

公开(公告)日：2010-02-09

申请号：CA2524364

申请日：2004-04-20

Applicant: ECOLAB INC

Inventor： HOWES RONALD BRUCE JR ,  MAY ROBERT EUGENE ,  PETERSON JEFF W

IPC: G05D11/00 ,  A47L15/00 ,  A47L15/42 ,  A47L15/44 ,  A47L15/46 ,  D06F39/00 ,  G01N27/06 ,  G01R27/22 ,  G05D11/13 ,  G05D21/02

Abstract: 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.

公开(公告)号：BRPI0410399A

公开(公告)日：2006-07-04

申请号：BRPI0410399

申请日：2004-04-20

Applicant: ECOLAB INC

Inventor： HOWES RONALD BRUCE JR ,  MAY ROBERT EUGENE ,  PETERSON JEFF W

IPC: A47L15/00 ,  A47L15/42 ,  A47L15/44 ,  A47L15/46 ,  D06F39/00 ,  G01N27/06 ,  G05D11/13 ,  G05D11/00 ,  G01R27/22 ,  G05D21/02

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.

公开(公告)号：CA2524364A1

公开(公告)日：2004-12-09

申请号：CA2524364

申请日：2004-04-20

Applicant: ECOLAB INC

Inventor： MAY ROBERT EUGENE ,  PETERSON JEFF W ,  HOWES RONALD BRUCE JR

IPC: A47L15/00 ,  A47L15/42 ,  A47L15/44 ,  A47L15/46 ,  D06F39/00 ,  G01N27/06 ,  G01R27/22 ,  G05D11/00 ,  G05D11/13 ,  G05D21/02

Abstract: A system and method is disclosed for controlling chemical dispense operation s based on a conductivity offset determined for a chemical solution. The chemical dispense operations are performed by or in conjunction with operati on 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 conductivi ty of the water, is used to normalize the conductivity estimated for the chemic al solution relative to the component chemical product in the solution. During various points in time during operation of the utility device, the normalize d conductivity is compared to a conductivity setpoint, and if the normalized conductivity falls below the conductivity setpoint, a specified volume of th e component chemical product is supplied to the solution tank.