科里奥利质量流量计零点漂移分析及解决对策  

The zero-point drift analysis and solutions of coriolis mass flowmeter

作　　者：吴步坤 WU Bu-Kun(Guangdong Huizhou Quality&Measuring Supervision Testing Institute,Huizhou 516000,China)

机构地区：[1]广东省惠州市质量计量监督检测所,惠州516000

出　　处：《实验室检测》2024年第11期167-169,共3页Laboratory Testing

摘　　要：目的解决科里奥利质量流量计零点漂移问题。方法采用基于Prolink工控软件的零点校准方法,对型号为CMF的质量流量计进行了计量检测并对其进行了调零,获得了示值误差及重复性等数据。结果调零前,测得科里奥利质量流量计的示值误差为-0.85%,经计算存在零点漂移。在经过调零校准后,流量计的示值误差为-0.12%,计量性能符合准确度等级所规定的要求。结论使用Prolink工控软件对流量计进行零点值调整后,可消除零点漂移对流量计相位差偏移的影响,从而提升流量计的计量准确度。Objective To solve the zero drift problem of Coriolis mass flowmeter.Methods The zero calibration method based on Prolink industrial control software was used to measure and zero the CMF mass flowmeter,and data on indication error and repeatability were obtained.Results Before zeroing,the reading error of the Coriolis mass flowmeter was measured to be-0.85%,and it was calculated that there was zero drift.After zero calibration,the indication error of the flowmeter is-0.12%,and the measurement performance meets the requirements of the accuracy level.Conclusion After using Prolink industrial control software to adjust the zero value of the flowmeter,the influence of zero drift on the phase difference offset of the flowmeter can be eliminated,thereby improving the measurement accuracy of the flowmeter.

关 键 词：科里奥利质量流量计 零点 零点漂移 计量 校准 

分 类 号：TH814.6[机械工程—仪器科学与技术]