Liquid e.g. water, level alarm device for use in lavatory, has mill housing carrying measuring device that is constituted by hollow tube, where diameter at free end of tube is greater than diameter at mounted end of tube on end-fitting

摘要

The device has a mill housing enclosing a contactor (3), pressure switch (4), battery (5) and sound alarm (6) for detecting and transmitting an alarm signal, and carrying a measuring device constituted by a hollow tube (2). The hollow tube is mounted and fixed on a hollow end-fitting of the housing. The hollow tube is made of a flexible plastic material, where diameter at a free end of the tube is greater than diameter at a mounted end of the tube.