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  • 工业温度计对元件稳定性有什么要求
  • 本站编辑:杭州博阳仪器仪表有限公司发布日期:2019.12.11
元件的结构稳定性很好,而且侧不出回差。也的确曾经出现过某些变化,但这可能是实验方法所引起,也可能是由于在操作过程中铂丝产生细微的机械形变所致.松软的氧化铝粉为铂丝提供了一定程度的支撑.有些类似的元件当采用了自由悬挂的螺旋圈,就没有出现回差,但它们不象铂丝受到充分支撑的元件稳定。
    元件结构用于航空或航天的某些场合,此时稳定性要求高。这种元件使用一根铂制芯棒,使铂丝的应变极小.从这种元件观察到的回差很小,而且能够重复。回差是由于绝缘材料的膨胀系数不同引起的。云母的膨胀系数比铂大,这是引起回差反向的原因。另外还设计过一些类似的结构,使用的绝缘材料的膨胀系数与铂更加接近。

The structural stability of the component is good, and there is no side slip. It is also true that there have been some changes, but this may be due to the experimental method or to the slight mechanical deformation of the Platinum wire during operation. The soft alumina powder provides a degree of support for the platinum wire. Some of these components do not exhibit backlash when free-hanging coils are used, but they are not as stable as well-supported components of platinum wire. The element structure is used in some situations of aviation or spaceflight, and the stability is required. The element uses a platinum mandrel to minimize the strain on the platinum wire. The observed return from this element is small and repeatable. The return difference is caused by the different coefficient of expansion of the insulating material. The Coefficient of expansion of Mica is higher than that of platinum, which is the cause of the reverse of the contrast. Similar structures have also been designed, and the insulation used has a coefficient of expansion closer to platinum.
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