BS ISO 10494:2018规定了在稳态运行条件下测量涡轮机或汽轮机组噪声排放的方法。它规定了测量声源周围测量表面上的声压级和计算声源产生的声功率级的方法。它给出了测试环境和仪器的要求，以及获得表面声压级的技术，从表面声压级计算声源的A加权声功率级和倍频程或三分之一倍频程带声功率级。即使测试的目的只是确定机器周围的声压级，也可以使用这些方法进行性能测试。 本文件适用于涡轮机和汽轮机组:用于发电厂和工业应用（如固定式）；用于船舶、海上设施、公路和铁路车辆上的安装。它不适用于飞机应用中的燃气轮机。本文件仅适用于位于地板上方且位于该地板包围的连续包络测量面内的汽轮机组部分（涡轮机、驱动设备和附属部件）。它适用于稳态运行，不包括启动和关闭等瞬态，此时噪声排放可能在短时间内更高。在这些情况下，本文件不适用。 交叉引用:ISO 3746:2010 Ed 3ISO 3744:2010 Ed 3IEC 60942IEC 61260-1ISO 6926IEC 61672-1ISO 9614-3:2009ISO 12001:2009IEC 60268-4ISO 9614-2:1997ISO 9614-1:2009ISO/TS 7849-1:2009ISO 3741:2010 Ed 4ISO 3747:2010 Ed 3ISO 3745:2012ISO/TR 25417:2007 Ed 1ISO 3740:2000 Ed 2ISO 3382-2:2008 Ed 1ISO 7849-2:2009ISO 3743-2:1994ISO 11201-2010所有现行修订版2007ISO 3743:2008购买本文件时提供的信息包括在内。

BS ISO 10494:2018 specifies methods for measuring the noise emission of a turbine or turbine set under steady-state operating conditions. It specifies methods for measuring the sound pressure levels on a measurement surface enveloping a source, and for calculating the sound power level produced by the source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the A-weighted sound power level of the source and octave or one-third-octave band sound power levels are calculated. These methods can be used to conduct performance tests even if the purpose of the test is simply to determine the sound pressure level around the machine.This document is applicable to turbines and turbine sets:for power plant and industrial applications (e.g. stationary);for installation on board ships, or offshore installations, road and railway vehicles.It does not apply to gas turbines in aircraft applications.This document is applicable to only the part of the turbine set (turbine, driven equipment and attached components) located above the floor and inside a continuous enveloping measurement surface bounded by this floor.It is applicable to steady-state operation and excludes transients such as start-up and shut-down, when the noise emission can be higher for short times. Under these conditions, this document does not apply.Cross References:ISO 3746:2010 Ed 3ISO 3744:2010 Ed 3IEC 60942IEC 61260-1ISO 6926IEC 61672-1ISO 9614-3:2009ISO 12001:2009IEC 60268-4ISO 9614-2:1997ISO 9614-1:2009ISO/TS 7849-1:2009ISO 3741:2010 Ed 4ISO 3747:2010 Ed 3ISO 3745:2012ISO/TR 25417:2007 Ed 1ISO 3740:2000 Ed 2ISO 3382-2:2008 Ed 1ISO/TS 7849-2:2009ISO 3743-2:1994ISO 11201:2010 Ed 2ISO 3743-1:2010 Ed 2ISO 80000-8:2007All current amendments available at time of purchase are included with the purchase of this document.