本国际标准描述了工作原理和最重要的性能特征 自动流量测量系统，用于确定固定源管道中的体积流量。 还介绍了确定自动体积流量测量系统性能特征的程序 包含在本国际标准中。 性能特征是通用的，不限于特定的测量原理或仪器 系统。 注意使用所述工作原理并符合本国际标准要求的商业系统 有现成的标准。

This International Standard describes the operating principles and the most important performance characteristics of automated flow-measuring systems for determining the volume flowrate in the ducts of stationary sources. Procedures to determine the performance characteristics of automated volume flow-measuring systems are also contained in this International Standard. The performance characteristics are general and not limited to specific measurement principles or instrument systems. NOTE Commercial systems which use the operating principles described and meet the requirements of this International Standard are readily available.