DIN EN ISO 5135-2020 声学. 在混响试验室中测定空调终端设备、空调终端单元、阻尼器和调节阀门的噪声功率级
Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room (ISO 5135:2020); German version EN ISO 5135:2020
This document defines requirements for acoustic testing of air-terminal units, dampers and valves used in air diffusion and air distribution systems in reverberation rooms. It is based on the use of ISO 3741, which describes the acoustic test facilities, instrumentation and proce