| 摘要 |
PURPOSE:To make a temperature indicator simple, small-sized, durable, and also usable repeatedly, by placing a magnt piece which has a display function and is movable, through a temperature sensible magnetic material having a Curie point in a display temperature, on a fixed magnet plate. CONSTITUTION:A temperature indicator is constituted so that temperature sensible magnetic materials having a Curie point in each display temperature, for instance, temperature sensible ferrite plates 2a-2d are arranged on a ferrite magnet plate 1, a base to which a holder 3 has been made to adhere is prepared in a position corresponding to each temperature sensible ferrite plate 2a-2d, and thin magnet pieces 4a-4d are stored by 1 piece each into holes 3a-3d of this holder 3 so as to be freely turnable. In this way, whenever a temperature of a substance exceeds the Curie point, the magnet piece moves and displays a temperature, therefore, it is possible to obtain a temperature indicator which is simple, small-sized, durable, and is capable of executing a repeated operation. |
