Ultrasonic flow metering errors due to pulsating flow

被引：27

作者：

Berrebi, J ^{[1
]}

Martinsson, PE

Willatzen, M

Delsing, J

机构：

[1] Lulea Univ Technol, EISLAB, Dept Comp Sci & Elect Engn, SE-97187 Lulea, Sweden

[2] Univ So Denmark, Mads Clausen Inst Prod Innovat, DK-6400 Sonderborg, Denmark

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 2004年 / 15卷 / 03期

关键词：

ultrasonic flow meter; pulsating flow; zero-crossing; installation effect; prediction error;

D O I：

10.1016/j.flowmeasinst.2003.12.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Transit-time ultrasonic flow meters present some advantages over other flow meters for district heating industries. They are both accurate and non-intrusive. It is well-known that ultrasonic flow meters are sensitive to installation effects. Installation effects could be static or dynamic. Among the possible dynamic installation effects is pulsating flow. The influence of pulsating flow on the prediction and the zero-crossing operations is investigated. Expressions are found for the prediction error and the zero-crossing error. The relative errors due to the prediction and the zero-crossing are plotted. The prediction error can reach dramatic values while the zero-crossing operation is hardly influenced by flow pulsations. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：179 / 185

页数：7