| 摘要 |
<p>PURPOSE:To reduce the weight of the pressure transducer and to attain its mass- production by welding the projection part of an intake part to the peripheral part of a pressure receiving diaphragm electrically and forming integral constitution. CONSTITUTION:The thin annular projection part 12e which covers a large- diameter opening part 12d and has the same height is formed at the intake part 12 where fluid as a pressure medium is admitted. The pressure receiving diaphragm 13 is formed of a material which has nearly the coefficient of expansion with the intake part 12 into a disk thin enough to deform by sensing the pressure of the fluid. Then when the transducer is assembled, the peripheral edge part of the diaphragm 13 abuts on the projection part 12e and a large current is fed from an electrode 14 which presses the diaphragm to weld both in one body.</p> |
