IEC 60651 Ed. 1.0被替代
Sound level meters
出版：International Electrotechnical Committee
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基本信息
标准编号： IEC 60651 Ed. 1.0
发布时间：1979/1/1 0:00:00
标准类别：Standard
出版单位：International Electrotechnical Committee
标准页数：53
标准简介
Deals with sound level meters of four degrees of precision, designated Types 0, 1, 2 and 3. Specifies the following characteristics: directional characteristics, frequency weighting characteristics, time-weighting, detector and indicator characteristics, sensitivity to various environments. Establishes electrical and acoustical tests to verify compliance with characteristics specified and describes the method for absolute sensitivity calibration. This standard supersedes IEC 60123 and IEC 60179.
