浮子流量传感器线性度的研究  

Study on the Linearity of Float Flow Sensor

作　　者：叶佳敏[1] 张涛[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《传感技术学报》2007年第3期570-574,共5页Chinese Journal of Sensors and Actuators

基　　金：天津市自然科学基金资助(023603511)

摘　　要：浮子流量传感器中存在的非线性问题是影响浮子流量计测量精度的一个重要因素,为了解决这个问题,作者深入研究了浮子流量传感器的特性,利用最小二乘法拟合数据,分析浮子高度和流量之间的非线性关系.理论和实验研究结果表明,针对目前应用的短管型浮子流量计流量和浮子高度之间存在明显的非线性关系,并且发现在其他条件相同的情况下浮子行程的增加即锥管锥角的减小对浮子流量传感器线性度的改善具有重要的作用.The nonlinear problem is very important to float flow sensor, which affects accuracy of rotameter. In order to solve the problem, the characteristics of float flow sensor are studied and the relationship between float height and flux is analyzed by least square method. The obvious nonlinear relationship between flux and float height to short-pipe type float flow sensor is presented. It is found that the linearity could be improved by increasing the float distance of run and decreasing the taper angle, which has good practicability.

关 键 词：浮子流量计 线性度 浮子行程 锥角 流量传感器 

分 类 号：TH814[机械工程—仪器科学与技术]