| 热式流量计混合气体组分补偿策略 |
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| 引用本文： | 张世荣,唐玉玲.热式流量计混合气体组分补偿策略[J].测试技术学报,2009,23(4):307-312. |
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| 作者姓名： | 张世荣 唐玉玲 |
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| 作者单位： | 1. 武汉大学,动力与机械学院,湖北,武汉,430072
2. 中南民族大学,计算机学院,湖北,武汉,430074 |
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| 摘 要： | 混合气体的组分变化将对热式流量计的输出造成一定影响,这是该类流量计在工程应用中的难题.本文从定温热式气体流量计的基本公式出发,结合电路结构,推导了热式流量计在不同气体组分条件下使用时输出信号之间的关联方程,定义了补偿系数.并提出利用补偿系数在流量计标定数据的基础上,进行组分补偿的方法和过程.将该补偿策略分别应用于SIERRA热式流量计以及自行设计的热式气体流量计样机,给出了其在现场煤气流量测量中的实验结果,验证了该补偿策略的有效性和实用性.
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| 关 键 词： | 热式流量计 组分补偿 混合气体 补偿系数 物性参数 |
Compensation Strategy for Thermal Flow Meters Subject to Component Variations of Gas Mixtures |
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| ZHANG Shirong,TANG Yuling.Compensation Strategy for Thermal Flow Meters Subject to Component Variations of Gas Mixtures[J].Journal of Test and Measurement Techol,2009,23(4):307-312. |
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| Authors: | ZHANG Shirong TANG Yuling |
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| Affiliation: | 1.College of Power & Mechanical Engineering;Wuhan University;Wuhan 430072;China 2.College of Computer Science;South-Central University for Nationalities;Wuhan 430074;China |
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| Abstract: | The component variation of gas mixture definitely brings measurement errors to the thermal flow meters(TFM),which results in a difficult problem for the applications of TFM.The relation equations for the outputs of TFM subject to different components are deduced and a compensation coefficient is defined.They are based on the theoretical equations of constant temperature TFM and its circuitry structure.The compensation strategy and compensation procedure are also proposed,based on the compensation coefficien... |
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| Keywords: | thermal flow meter component compensation strategy gas mixture compensation coefficient physical property parameter |
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