| 摘要 |
PURPOSE:To easily adjust the inductance of a coil by providing a metallic body additionally on the outer peripheral wall of the housing of a pressure sensor equipped with a magnetic body which is inserted into the winding hole of a coil put in the housing and associated with a diaphragm. CONSTITUTION:The pressure sensor is equipped with the coil 22 put in the housing 10 and the magnetic body 32 which is inserted into the winding hole 30 of the coil 22 and associated with the diaphragm 34, and the metallic body 52 is provided additionally on the outer peripheral wall of the housing 10. When the structure, shape, fitting position, and material of the metallic body 52 are selected, a magnetic path is formed for the coil 22 put in the housing 10 or the metallic body becomes a barrier to perform proper magnetism increasing or decreasing operation. Therefore, even if an employed electronic component and the magnetic body 32 have variance, the metallic body 52 is only added on the outer peripheral wall of the housing 10 and the inductance of the coil 22 is easily adjusted to compensate the variance, thereby evading the difficult replacement of respective electronic components, the disposal of the whole sensor, etc.
|
