Device for controlling brine concentration in household appliance, especially dishwasher, has optical sensor and float assembly arranged so that sensor output varies with brine concentration

摘要

Device for controlling the brine concentration in a household appliance, especially a dishwasher with a brine container, whereby an electromagnetic radiation transmitter (4) and receiver (5) are linked via a beam path that passes through a brine container (1). Typically the radiation can be infrared. A first implementation comprises a float (3) is a deformation area (2) of the brine container. The position of the float varies with brine concentration so that the amount of transmitted light varies accordingly.