| 摘要 |
An essentially frictionless, reliable pressure indicator capable of withstanding high pressures, includes dual opposed springs (22, 26), a pair of magnetic elements (14, 18), and a flexible diaphragm (30) preferably of elastomeric material abutting magnetic element (18). Use of the flexible diaphragm permits precise control of the amount of travel necessary for the magnetic attractive forces to counteract the mechanical spring forces, increasing the accuracy of the overall device. The present structure, with its flexible diaphragm and an associated dampening aperture (111), is also designed to withstand transient pressures of as much as 2500 psi (17 MN.m-2) or more. |
