流量计在线环境适应性实验系统研究  

Research on Online Environmental Adaptability Experiment System of Flowmeter

作　　者：李晓鹏[1] 邢超[1] 孟涛[1] LI Xiao-peng;XING Chao;MENG Tao(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量学报》2020年第S01期11-15,共5页Acta Metrologica Sinica

基　　金：国家重点研发计划(2019YFB2006601)。

摘　　要：流量计在线环境适应性实验系统由试验箱体和控制机组2部分组成,试验箱体采用上下分体式结构,可适应复杂的实验环境,安装于不同的实验管路中。该系统可模拟的温度范围为(-40~60)℃,相对湿度范围为30%~98%,可测试流量计在不同环境下的变化情况。通过对6台电磁流量计的测试,可得出以下结论:随着环境温度的改变,不同流量计的示值误差变化量也不相同,最大变化量约为12.63%。说明严苛的环境温度会对部分电磁流量计有很明显的影响。不同的环境温度,对电磁流量计的重复性影响较小。The on-line environmental adaptability experiment system of flowmeter is composed of two parts,the test box and the control unit.The test box adopts the upper and lower split structure,which can adapt to the complex experimental environment.It can be installed in different experimental pipelines.The system can simulate the temperature range of(-40~60)℃and the relative humidity range of 30%~98%.It can test the change of flowmeter in different environments.Through the test of six electromagnetic flowmeters,the following conclusions can be drawn:With the change of ambient temperature,the indication error of different flowmeters varies,and the maximum variation is about 12.63%.The results show that the harsh ambient temperature has obvious influence on some electromagnetic flow meters.Different ambient temperature has little effect on the repeatability of electromagnetic flowmeter.

关 键 词：计量学 在线环境实验 恒温箱 电磁流量计 

分 类 号：TB937[一般工业技术—计量学]