Patent ID: 6833555
Filing Date: 2004-12-21
Classification: A47L,D06F,G01N

Abstract:
Method for adjusting output voltages of a turbidity sensor for household appliances for measuring the turbidity of a medium by means of a radiation at least partially propagating through the medium being emitted from a sender and received by a receiver, comprising the following steps:defining a desired characteristic line or a desired characteristic line range which characterizes the desired output voltages of the receiver in response to a radiation obtained from the sender in dependence of sender currents for operation of the sender, determining a current characteristic line which characterizes the current dependency of output voltages of the receiver from the sender currents, comparing the current characteristic line with the desired characteristic line or the desired characteristic line range, and varying the ohmic load of the receiver for its output side such that the desired output voltages are obtained if the comparison indicates that the current and the desired characteristic line are different or that the current characteristic line is outside the desired characteristic line range.