| 摘要 |
<p>A thin metal diaphragm of a differential pressure unit (DPU) is stretched beyond its yield point. This method step unexpectedly reduces the spring rate and zero shifts due to line pressure fluctuations and due to differential thermal expansion and contraction between the diaphragm and its support. It also unexpectedly makes the DPU more accurate by allowing for a weaker and more accurate zero spring adjustment.</p> |
