大口径在线流量计现场校准影响因素分析  

Analysis of Field Calibration Influence Factors of Large-diameter On-line Flowmeter

作　　者：张朋 马振奇 丁腾飞 ZHANG Peng;MA Zhenqi;DING Tengfei(He’nan Province Measurement Test Science Study Institute,Zhengzhou 450000,China)

机构地区：[1]河南省计量测试科学研究院,河南郑州450000

出　　处：《电子质量》2024年第4期101-104,共4页Electronics Quality

摘　　要：对于现场无法拆却的大口径管道流量计,目前大部分企业选择在线校准[1]的方法来实现量值溯源,故现场校准的准确与否直接影响着其正常使用。根据在线计量的实际需求,采用标准表法比对管道材质、管径、壁厚测量、输入误差、内衬、示值误差读数、磁场因素、流体温度和前后直管段长度等因素对大口径在线流量计现场校准的影响进行了研究,并提出了相应的改进措施,为大口径在线流量计的现场校准提供了一定的指导。For large diameter pipe flowmeters that can not be disassembled in the field,most enterprises choose online calibration method to achieve quantity value traceability,so the accuracy of on-site calibration directly affects its normal use.According to the actual demand of online metering,the influence of pipe material,pipe diameter,wall thickness measurement,input error,inner liner,indication error reading,magnetic field factor,fluid temperature,front and back straight pipe length on the field calibration of large diameter online flowmeter is studied by using standard table method,and the corresponding improvement measure are put forward,which provides some guidance for the field calibration of large diameter online flowmeter.

关 键 词：超声流量计 在线校准 影响因素 

分 类 号：TB937[一般工业技术—计量学]