ДСТУ EN 457-2001
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1 2 4 5 0 1 2 З? 4 5 5.1 5.2 5.2.1 5.2.2 5.2.З? 6 6.1 6.2 7 8 8.1 8.2 8.З? 8.З?.1 8.З?.2 8.4 9 —? —? —? —? —? 0 * „ .. . . . .
SAFETY OF MACHINERY
AUDITORY DANGER SIGNALS
General requirements, designand testing
1 2 EN 292-2 Safety of machinery — Basic concepts, general principles for design. Part 2:
Technical principles and specifications
ISO 266:1975 Acoustics — Preferred frequencies for measurements
ISO 4869-1:1990 Acoustics — Hearing protectors — Subjective method for the measurement of sound attenuation
IEC 602251)Octave, half-octave and third-octave band filters intended for the analysis of sound and vibrationsIEC 60651Sound level meters
EN 292-2 ISO 4869-1:1990** ** )
З? З?.1 З?.1.1 З?.1.2 З?.2 З?.З? З?.4 1) 4 f — L w d — L T oct — L T 1/3 oct — L oct — L n L n oct — L n 1/3 oct — L s A — A - L s oct — 5 5.1 5.2 5.2.1 5.2.2 5.2.3 6 6.1 а?) Ь?) с?) 6.2 7 L T 1 , oct — L N 1 , oct
L - .. -^ ^ T 1 , 1/3oct = ^ N 1 , 1/3oct
^ T n , 1/3oct = max - ( ^ N n , 1/3oct ’ ^ 8 8.1 8.2 8.3 8.3.1 8.3.2 8.4 9 а?) Ь?) с?) )
b)
(
f (
L ' n oct — L ' s oct — L T oct —