标准表法气体流量标准装置标定方法的研究

Investigation on the Calibration Methods of Gas Flow Standard Facilities by Master Method

针对目前标准表法气体流量标准装置标定中存在的检定周期短、标准流量计拆卸安装复杂的问题,提出了一种新的标准流量计量值溯源的方法,并基于实验验证了这种方法的可行性,结果表明:新方法与传统方法得到的仪表系数相差不超过0.1%,且采用此方法标定过的装置与上一级标准装置对同一流量计检定结果的误差不超过0.1%。

In view of the problems existing in the calibration of gas flow standard facilities by master method, such as short verification period , complicated removal and installation of master meter, a new method to trace the value of master meter is proposed and by experiments ,the feasibility of this method is verified. Experimental results show that: the meter factor get from the new method is no more than 0.1% different from the traditional method,and the error of the flowmeter calibrated by the flow standard facilities and higher level standard facilities shall not exceed 0.1%.