Standard No.:	GB/T 21231-2007
English Name:	Acoustics - Method for the measurement of airborne noise emitted by small air-moving devices
Chinese Name:	声学 小型通风装置辐射空气噪声的测量方法
Chinese Classification:	A59    Acoustic Measurement
Professional Classification:	GB    National Standard
ICS Classification:	17.140.20 17.140.20    Noise emitted by machines and equipment 17.140.20
Source Content Issued by:	AQSIQ; SAC
Issued on:	2007-11-14
Implemented on:	2008-5-1
Status:	superseded
Superseded by:	GB/T 21231.1-2018 Acoustics—Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices—Part 1: Airborne noise measurement
Superseded on:	2018-10-1
Target Language:	English
File Format:	PDF
Word Count:	12000 words
Translation Price(USD):	360.0
Delivery:	via email in 1~3 business day

本标准规定了小型通风装置辐射空气噪声的测量方法。这类通风装置主要用于冷却电子、电气和机械设备，包括螺旋桨式通风机、轴流风机、翼式轴流风机、离心风机、贯流式风机、柜式鼓风机和这些装置的变型。本标准可用于冷却电子以及类似设备的小型通风装置总声功率级的测量。试验数据表明该方法对于空气流量不大于1 和风扇静压不大于750Pa的场合都是有效的。