论差压式流量计示值修正公式立论基础  

The Argument Basis for the Indicated Value Modification Formulas of the Differential Pressure Flowmeter

作　　者：权正锐 

机构地区：[1]太原钢铁(集团)有限公司自动化公司,山西太原030003

出　　处：《山西电力》2013年第1期62-65,共4页Shanxi Electric Power

摘　　要：阐述了我国国家标准规范的"差压式流量计示值修正公式"是建立在离线立论基础之上的,因而导出的修正公式全部存在问题。其中仅最常用的一条公式(见表1 GB/T18215.1—2000附录B差压式流量计示值修正公式中修正1)问题较小还算可用外,其余所有公式的修正方向都是相反的,越修正示值误差越大。实践证明只要把立论基础由离线改为在线,上述所有问题就都不存在了。The article states that since the indicated value modification formulas of the differential pressure flowmeter within the national standards are established on offline argument basis, there are problems about all the modification formulas. Only the most frequently used formula can still be used with minor error （see Chart 1 GB/T18215.1-2000 Appendix B 1st of the Indicated Value Modification Formulas of the Differential Pressure Flowchart）; the modifying direction of the rest formulas is reversed, and the more it is modified the bigger is the indicated value error. It has been verified by practice that if the argument basis is changed from offline to online all these problems mentioned above will be solved.

关 键 词：差压式流量计 示值修正 离线立论基础 在线立论基础 

分 类 号：TH814.5[机械工程—仪器科学与技术]