摘要
在分析饱和蒸汽和过热蒸汽密度的数学模型的基础上指出,温度检测的偏差对智能流量积算仪的精度影响极大,尤其是饱和蒸汽,测温电路的精度应设计为远高于仪表的精度,同时引入一种基于比率法的高精度测温电路.
Based on the analysis of the mathematics models of saturation steam density and superheat steam density the paper states that the deviation of the detection on temperature highly affects the accuracy of intelligent flow totalizer. Especially for saturation steam, the accuracy of the temperature detection circuit shall be designed higher than the accuracy of the instrument. Thus a temperature detection circuit based on ratio method with high accuracy is introduced.
出处
《自动化仪表》
CAS
北大核心
1999年第2期38-42,45,共6页
Process Automation Instrumentation
关键词
流量积算仪
温度补偿
精度
智能仪表
Flow totalizer Temperature compensa-tion Temperature detection circuit Ac-curacy Ratio method
