LEVEL DETECTOR OF LIQUID TANK

PURPOSE:To provide a level detector in which electrically detecting means of a switch, etc., are disposed in positions detached as far as possible from a chamber, bad influences by high and low temperatures of a liquid and an atmosphere within the chamber are avoided, the displacement from a fixed level position of a float is transmitted without contact to an electrical means, and the means is certainly operated. CONSTITUTION:Within a chamber 12 made of a non-magnetic material, communicated with a liquid tank 1 and having a level corresponding to the level within the tank 1, a float 2 with a magnet 21 is floated, and in a position distant from the chamber 12, an electrically detecting means 3 operating when the float 2 ascends or descends from a fixed level position, is disposed. Between the side position of the chamber 12 and the electrically detecting means 3, a rotation magnet group 4 rotated in order with the magnetic action of the magnet 21 within the float 2 as a start by the vertical movement of the float 2 operating the electrically detecting means 3, is disposed.