Patent ID: 7733097

Claim:
Method for the conductance-based determination of a property of a fluid employed in a household device comprising: an arrangement of at least two conductance electrodes, characterised in that at least two representative measurement values for the conductivity of the fluid are obtained at different values of at least one measurement parameter, and at least one value characterising the property of the fluid is obtained by correlating the resultant measurement values, in which the measurement parameter is one of the following: the frequency of an electrical measurement voltage or an electrical measurement current applied to at least one pair of electrodes of the electrode arrangement, the waveform of such measurement voltage or such a measurement current, the amplitude of such a measurement voltage or such a measurement current, the position of a pair of electrodes of the electrode arrangement used for obtaining a measurement value, the interspacing between two electrodes of the electrode arrangement used to obtain a measurement value, the geometry of the conductance electrodes, an operating state or a process variable of the household device.