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流量计检定工作是在实验室标准装置下完成的,涡街流量计的一个重要参数是雷诺数,其变化对涡街流量计检定结果能产生一定的影响.对涡街流量计测量特性做了简要介绍,采用现场实验的方法,通过在型式评价实验室标准装置对仪表k系数标定的对比,对涡街流量计在不同介质、不同温度下雷诺数相似原理的体现进行了分析,检测结果表明,外部条件几何相似时,若涡街流量计的雷诺数相等,则其流体流动状态也几何相似.“,”The flowmeter verification work is done by the standard laboratory equipment. Reynolds number is one of the important parameters of vortex flowmeter. The change of Reynolds number could make certain impacts on the vortex flowmeter verification results.The measurement features of vortex flowmeter were introduced. Using approaches of field experiments,the appearance of Reynolds similar principles in different media and different temperatures by comparing the calibration of the instrument k coefficient were analyzed.The calibration of the instrument coefficient were compared by standard devices in type evaluation laboratory.The results showed that if external conditions were similar geometrically and Reynolds numbers were equal, the flow state would be similar geometrically.