该标准描述了用于测量安装在机器上的排气系统的捕获效率的方法。该方法基于示踪技术，可以在所有类型的测试环境（台式机，房间和现场，见ENV 1093-1）中运行。该技术仅在示踪剂显示与实际污染物相当的空气动力学行为（见7.1.1）时才适用。排气系统的捕集效率的测量可以用于:a）评估机器排气系统的性能; b）对排气系统改进的评估; c）类似设计机器的排气系统比较; d）根据排放系统的捕获效率排列排气系统; e）确定排气的空气流量以达到给定的捕获效率水平; f）确定相对于捕获效率的机器排气系统的现有技术状态

This standard describes a method for the measurement of the capture efficiency of an exhaust system installed on a machine. This method is based on a tracer technique and may be operated in all types of test environment (bench, room and field, see ENV 1093-1). This technique is applicable only if the tracer shows aerodynamic behaviour comparable with the real pollutant (see 7.1.1). The measurement of the capture efficiency of an exhaust system can serve for: a) the evaluation of the performance of an exhaust system of a machine; b) the evaluation of the improvement of an exhaust system; c) the comparison of exhaust systems for machines of similar design; d) the ranking of exhaust systems according to their capture efficiency; e) the determination of the air flow of an exhaust to achieve a given level of capture efficiency; f) the determination of the state of the art of exhaust systems for machines with respect to the capture efficiency.