| 摘要 |
A water softener device, in particular for household appliances such as dishwashers, laundry washing machines and the like, comprising a column (7) of ion exchange material, and water and material sensors (A, B, C, D, E) for determining quantities concerning the operativeness of said column by means of electrical conductivity measurements, in which the sensors (A, B, C, D, E) are powered by an electronic measurement circuit (10) with substantially square wave voltages in phase opposition. <IMAGE> |
