Sensor unit for determining a water softener charge, consists of an ion exchange material filling and a volume measurement element

摘要

A sensor unit for determining the charge state of a water softener, especially for domestic appliances such as dishwashers, washing machines, etc, comprises an ion exchange material filling and a volume measurement element for measuring the volume of the filling. The sensor (1) has a housing (18) whose cross section (19) reduces. The volume element measures how full the unit is. The housing consists of a transparent material.