Appliance with turbidity sensor calibration

Abstract

An appliance is disclosed for improving the accuracy of turbidity measurements. In an exemplary embodiment, the appliance includes a turbidity sensor and at least one processing device in communication with the turbidity sensor. The at least one processing device is configured to conduct a measurement of turbidity with the turbidity sensor exposed to air instead of water so as to provide a reference output from the turbidity sensor exposed to air; measure a turbidity of a fluid in the appliance during operation of the appliance with the turbidity sensor exposed to the fluid so as to provide a measurement output from the turbidity sensor exposed to the fluid; determine a temperature of the fluid; and apply an offset to the measurement output in order to provide an adjusted output, the adjusted output compensating for the difference in output of the turbidity sensor in water instead of air and for the temperature of the fluid.

Dependencies are inferred from the claim text.