| 摘要 |
PURPOSE:To prevent erroneous connection and to improve the workability, by laminating insulating sheets, where voluted conductive circuits are printed, to constitute an exciting coil and connecting them electrically in parallel. CONSTITUTION:Voluted conductive circuits 4a, 4b-4n are formed on plural insulating sheets which are arranged so as to cover the approximate half of the outside circumferential part of a measuring tube, and their outiside end parts are connected electrically in parallel. They are connected to an electric power source E to form the exciting coil. Thus, a desired magnetic flux density is attained easily only by laminating a prescribed number of insulating sheets, and the erroneous connection is prevented, and the workability is improved. |
