The LM01 Membrane level sensor operates according to the principle of a membrane switch. Thereby, the switch element (proximity switch) is completely separated from the material being monitored. The level sensor is fitted vertically in the HF02 Powder Hopper, so that
the powder pushes the membrane upwards when it is filled, and so that a level sensor signal is given. If the powder hopper is empty, the membrane sinks down and the level sensor signal releases retarded.
Note: In the powder hopper may not exist an overpressure, because this can lead to an incorrect released level signal!