本文件规定了两种测量管道出口声压水平的方法 排气消声器: -第一种方法称为“稳态模式”，旨在评估稳态条件下的噪声水平 状态流量，即恒定上游压力（根据ISO 6358-1进行稳态试验）；和 -第二种方法称为“排放”，旨在测量气压降低期间的噪声水平（根据ISO 6358-2进行排放试验）。 本文件适用于设计用于降低声音的气动排气消声器和装置 由压缩空气排放产生，进入ISO 6358-1的适用范围，以及 ISO 6358-2。交叉引用:ISO 11202:2010ISO 6358-2IEC 61672-1IEC 60942ISO 4871ISO 6358-1IEC 61260ISO 3744ISO 3382-2购买本文件时提供的所有现行修订版均包含在购买本文件中。

This document specifies two methods of measuring the level of acoustic pressure at the outlet of an exhaust silencer: — the first method, called "steady-state mode", is intended to evaluate the noise level under steady state flow, i.e. constant upstream pressure (steady-state test according to ISO 6358-1); and — the second method, called "discharge", is intended to measure the noise level during the decrease of the pneumatic pressure (discharge test according to ISO 6358-2). This document is applicable to pneumatic exhaust silencers and devices designed to reduce the sound produced by discharges of compressed air, entering in the scope of application of ISO 6358-1 and ISO 6358-2.Cross References:ISO 11202:2010ISO 6358-2IEC 61672-1IEC 60942ISO 4871ISO 6358-1IEC 61260ISO 3744ISO 3382-2All current amendments available at time of purchase are included with the purchase of this document.