温度对科里奥利质量流量计零点漂移的影响  

Influence of Temperature on the Zero Drift of Coriolis Mass Flowmeter

作　　者：刘洁[1,2] 卢佳豪[2] 孔令飞 石磊[1] LIU Jie;LU Jiahao;KONG Lingfei;SHI Lei(School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an 710048,China;School of Chemistry and Chemical Engineering,Yan’an University,Yan’an 716000,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院,西安710048 [2]延安大学化学与化工学院,延安716000

出　　处：《自动化与仪表》2024年第6期127-131,155,共6页Automation & Instrumentation

基　　金：陕西省大创项目(S202210719131);陕西省教育厅协同创新项目(23JY085)。

摘　　要：在工程实践中,零点漂移是影响科里奥利质量流量计测量精度和稳定性的重要因素。温度对科里奥利质量流量计的流量和密度测量结果产生影响并出现较大偏差。该文旨在分析温度对科里奥利质量流量计测量的影响以及如何改进温度影响带来的测量误差。通过分析得出,环境温度对测量结果的影响,可以通过改变变送器信号模拟处理电路和输出电路来实现;介质工艺温度对传感器产生的影响,可以通过合理的电路设计和数字补偿来提高测量精度。In engineering practice,zero drift is an important factor that affects the measurement accuracy and stability of Coriolis mass flow meters.The temperature has an impact on the flow and density measurement results of the Coriolis mass flowmeter,and there is a significant deviation.This article aims to analyze the influence of temperature on the measurement of Coriolis mass flow meters and how to improve the measurement error caused by temperature influence.Through analysis,it can be concluded that the influence of environmental temperature on measurement results can be achieved by changing the analog processing circuit and output circuit of the transmitter signal.The impact of medium process temperature on sensors can be improved by reasonable circuit design and digital compensation to improve measurement accuracy.

关 键 词：零点漂移 科里奥利质量流量计 精度 

分 类 号：TH715[机械工程—测试计量技术及仪器]