汞柱式血压计测量结果的不确定度评定

Evaluation of Uncertainty in Measurement of Mercury Sphygmomanometer

目的:加深对测量不确定度概念的理解和实际操作过程的掌握。方法:对测量不确定度的基本概念及重要性作以介绍,按照JJG270-2008《血压计和血压表计量检定规程》对汞柱式血压计测量结果的不确定度进行评定,从而获得被检血压计的示值误差。结果:被检血压计的示值误差表示为:=0.2 kPa±0.4 kPa,νeff=40,k=2.02。结论:在血压计检定过程中,测量结果的不确定度大小取决于测量过程中存在的误差。

Objection：To furthcr understand the concept of uncertainty in measurement and grasp the process of actual manipulation. Method：The basic concepts and importance of uncertainty in measurement were introduced in this paper, uncertainty in measurement of mercury sphygmomanomctcr was evaluated according to JJG270-2008 Verification Regulation of Mercury Sphygmumanometer, thus error of indication of the verified mercury sphygmomanometer was achieved. Results： The error of indication of of the verified mercury sphygmomanomcters was expressed as △p = △p ± U95 = 0.2 kPa±0.4 kPa, veff = 40, k ： 2.02. Conclusion： During the vcrification of mercury sphygmomanomotcr, uncertainty in measurement was mostly decided by the existing crrors in measurements.