ДСТУ EN 24869-3:2005
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1 2 4 EN 24869-3:1993 —? —? —? —? —? —? —? —? —? ACOUSTICS
PERSONAL HEARING PROTECTORS
Part 3. Simplified method for the measurement of insertion loosof ear-muff for quality inspection
1 2 ISO 48:1979 Vulcanized rubbers — Determination of hardness (Hardness between 30 and 85 IRHD)
ISO 4869-1 IEC 60225:1966 Octave, half-octave and third-octave band filters intended for analysis of sound and vibrations
IEC 60263:1982 Scales and sizes for plotting frequency characteristics
IEC 60050(801):1984 International Electrotechnical Vocabulary. Chapter 801: Acoustics and electroacoustics. Section 1: General terms.
ISO 48:1979 ISO 4869-1 З? 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 4 5 5.1 5.1.1 а?) Ь?) 5.1.2 3 5.1.3 5.2 5.3 5.3.1 4
< 4 5
4 5.3.2 а?) b) 5.3.3 5.4 5.4.1 а?) Ь?) 75 90 85 5.4.2 5.5 5.5.1 5.5.2 5.5.3 6 7 50 + 1
145 + 1
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