涡街流量计测量系统不确定度的分析

通过分析涡街流量计在液体和气体流量测量应用中的工作原理,讨论了涡街流量计测量系统中仪器尺寸精度、斯特劳哈尔数、涡旋频率测量、温/压测量以及其它环节的系统不确定度分量和不确定度的合成。通过对测量系统不确定度的分析,提出了涡街流量计测量系统的改进方向以及涡街流量计的干标定问题,促进节能减排工作的进展。

Analysis of Vortex Shedding Flowmeter Measurement System Uncertainty

Based on the analysis of principle about liquid and gas flow measurement of the Vortex Flowmeter, this paper discusses some aspects and the synthesis of the uncertainty about the whole Vortex Flowmeter measurement system, such as the precision of the instruments size, the Strouhal number, the scroll frequency measurement, the measurements of temperature and pressure and so on. Through the analysis of the uncertainty, some trends of improvements which can improve the accuracy of the measurement results have ...