液体腰轮流量计示值误差测量结果的不确定度评定

Uncertainty Evaluation for Measuring Result of Indication Error of Liquid Root Flowmeter

结合中国石油长庆油田分公司原油流量计量的实际,利用测量不确定度评定的知识,通过建立数学模型、分析各输入量的标准不确定度、合成标准不确定度及扩展不确定度、给出测量不确定度报告,以达到对液体腰轮流量计示值误差测量结果的不确定度评定的目的。

Combined with the practice of crude oil flow measurement in Changqing Oilfield Company of CNPC,and by utilizing the knowledge of measuring uncertainty evaluation,the mathematic model is established so as to analyze the standard uncertainty,compound standard uncertainty and expanding uncertainty of every input quantity,followed by the presentation about the report of measuring uncertainty.Finally,this research has reached the aim of uncertainty evaluation on the measuring result of indication error of liquid root flowmeter.