Abrégé

An aquarium water heater (10) includes a hollow heat-conducting internal tube (12) with an electric resistance heater element (14) and electrical connection disposed adjacent an outer surface of the follow heat-conducting internal tube, a temperature thermal cut-out switch (18) electrically connected to the heater element for overheat protection, and a heat-conducting, electrically insulating polymeric filler (22) spaced between the internal tube and an external tube that circumscribes the internal tube and the heater element. The aquarium water heater also includes a water temperature sensor (76) that senses the temperature of water into which the heater is at least partially immersible, electrically coupled to a controller (70) to activate and deactivate the heater element and to an indicator (24) that indicates a condition that corresponds to the water temperature being in between a first predetermined minimum temperature and a first predetermined maximum temperature and a different indicating pattern corresponding to the water temperature dropping below a second predetermined minimum temperature or exceeding a second predetermined maximum temperature.

Classes IPC  ?

• H05B 3/80 - Éléments portatifs de chauffage par immersion