| 摘要 |
A sensor for measuring a turbidity of a liquid includes a housing having a first side defining a channel for holding the liquid, the housing also having a second side opposite the first side. A first turbidity sensor has an emitter and a receiver, the emitter and receiver being located on the second side of the housing adjacent the channel so that the liquid can be present between the emitter and the receiver of the first turbidity sensor, the first turbidity sensor outputting a signal. A second turbidity sensor has an emitter and a receiver substantially identical to that of the first turbidity sensor, the emitter and receiver being located on the second side of the housing spaced from the channel so that air and not the liquid is present between the emitter and the receiver of the second turbidity sensor, the second turbidity sensor outputting a signal. The signal from the first turbidity sensor is combinable with the signal from the second turbidity sensor to determine the turbidity of the liquid without determining the temperature of the liquid. Related dishwasher designs are also disclosed. |
