设计流量积算仪时需注意的几个问题  

Some problems about design of flow integrating meter

作　　者：蔡凤仪 李强[2] 

机构地区：[1]山东省计量科学研究院 [2]济南铁路局计量所

出　　处：《上海计量测试》2006年第3期26-28,共3页Shanghai Measurement and Testing

摘　　要：流量积算(或显示)仪是一种多参量综合计算的仪表,最终结果的准确度是各环节的综合误差,本文就多次浮点运算、温度、压力测量回路、采样周期的选取等方面分析产生误差的原因,以便在设计时引起注意。Flow integrating meter is a kind of integrated calculation instrument with parameters. The veracity of result of integrating is integrated error of every step. This paper analyzes the causes of error resulted from many ways, such as floating-point arithmetic, temperature, pressure measuring loop, choice of sampling cycle, so that the problems can be noticed.

关 键 词：浮点运算 A/D转换 采样周期 

分 类 号：TH814[机械工程—仪器科学与技术]