EN ISO 4871:1996

Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996)

Publication date:   Dec 29, 2001

General information

99.60 Withdrawal effective   Aug 5, 2009

CEN

CEN/TC 211 Acoustics

European Norm

17.140.20   Noise emitted by machines and equipment

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Scope

This International Standard - gives information on the declaration of noise emission values, - describes acoustical and product information to be presented in technical documents for the purposes of noise emission declaration, and - specifies a method for verifying the noise emission declaration. It is applicable to machinery and equipment. The values to be used for the purposes of noise emission declaration are either declared single-number noise emission values, Ld, or declared dual-number noise emission values, L and K. L is a noise emission value determined directly from measurements and K is the uncertainty associated with those measurements. Ld is the sum of L and K represents an upper limit which values from repeated measurements are unlikely to exceed at a given confidence level ; Ld corresponds to the stated or labelled value, Lc, defined in ISO 7574-1. The two forms of noise declaration are alternative means of representing any or all of the A-weighted sound power level, LWA, the A-weighted emission sound pressure level at specified positions, LpA, and the C-weighted peak emission sound pressure level at specified positions,LpC,peak. The choice as to which of the two forms is used in a particular case depends upon the requirements to be fulfilled. This selection is made, and guidance on the values of K is given, in the appropriate noise test code.

Related legislation

Legislation related to this standard

98/37/EC

Machinery

Harmonized/Supporting
89/392/EEC

Machinery - Safety of machinery: general essential health and safety requirements

Harmonized/Supporting

Life cycle

NOW

WITHDRAWN
EN ISO 4871:1996
99.60 Withdrawal effective
Aug 5, 2009

REVISED BY

PUBLISHED
EN ISO 4871:2009