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首页> 外文期刊>Journal of the Institution of Engineers (Inida) >Studies on the Stability of the Industrial Pressure Balances for Hydrostatic Pressure Measurement up to 100 MPa
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Studies on the Stability of the Industrial Pressure Balances for Hydrostatic Pressure Measurement up to 100 MPa

机译：高达100 MPa的静水压力测量工业压力天平的稳定性研究

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摘要

In the present paper, the results on the study, carried out on industrial pressure balance (PB) have been reported, which was characterized at NPL twice. The results thus obtained are also compared with the values reported by the manufacturer at the time of procurement and the stability of the effective area is established for the last seven years. Further studies were carried out on the same type and model of PBs as previous PB, being used by different users at two different locations. It is observed that there is a small change in the short term stability but the change is prominent in case of long term stability. However, such changes are well within the estimated measurement uncertainty of the instrument. The change in effective area is quite significant for the identical models at three different locations in India i.e. in Delhi (north), Chennai (south) and Guwahati (west), due to obvious reasons of different form geometry of the p-c assemblies. However, the behavior of effective area is found similar at all the three locations. The causes for such behaviours are described.
机译：在本文中，已经报道了在工业压力平衡（PB）上进行的研究结果，该结果在NPL上进行了两次表征。将由此获得的结果也与制造商在采购时报告的值进行比较，并确定了最近七年有效面积的稳定性。对与以前的PB相同类型和型号的PB进行了进一步的研究，供两个不同位置的不同用户使用。可以观察到，短期稳定性变化很小，但是在长期稳定性的情况下，这种变化很明显。但是，这种变化完全在仪器的估计测量不确定度之内。由于p-c组件的不同形式几何的明显原因，在印度的三个不同位置，即德里（北部），金奈（南部）和古瓦哈提（西部），相同模型的有效面积变化非常重要。但是，发现有效面积的行为在所有三个位置都相似。描述了这种行为的原因。

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