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BS 6805-4:1987

Current
Current

The latest, up-to-date edition.

Statistical methods for determining and verifying stated noise emission values of machinery and equipment Methods for determining and verifying stated values for batches of machines
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-30-1987

Publisher

British Standards Institution

National foreword
Committees responsible
Method
0. Introduction
1. Scope and field of application
2. References
3. Definitions
4. General
5. Guidelines for the determination of the labelled
    value, Lc, by the labeller
6. Verifying the labelled value for a batch of
    machines
7. Information to be given in a specific labelling
    code for a specific family of machines
Annexes
A. Operating characteristic curves and examples of
    single, double and sequential sampling
B. Guidelines for estimating standard deviations and
    for the use of operating characteristic curves
C. List of symbols
Tables
1. Acceptability constant k for different sample
    sizes n
2. Acceptability constants ka, kr and kd for double
    sampling and equivalent sample sizes (single/double)
3. Acceptability values a, b and r for sequential
    sampling and equivalent sample sizes (single/
    sequential)
4. Measured values, Li, and original data
5. Computational formulae and numerical results
6. Measured values
7. Quantiles of the standardized normal distribution
Figures
1. Operating characteristic curves (OCs) for single
    (double and sequential) sampling
2. Relation between triangle L / sigma M and sample
    size n
3. Change of the operating characteristic curve for
    sigma t not equal to sigma m
Bibliography

Guidelines for determining the labelled value by the labeller and statistical sampling procedures for verifying compliance of the noise emissions of a batch (lot) of machinery and equipment with its labelled value. Information to assist in drawing up specific labelling codes for specific families of machines.

This part of ISO 7574 provides guidelines for determining the labelled value, Lc, by the labeller and specifies statistical sampling procedures for verifying compliance of the noise emissions of a batch (lot) of machinery and equipment with its labelled value.

This part of ISO 7574 is intended to assist those parties responsible for drawing up specific labelling codes for specific families of machines. It is also intended to be of use to labellers who want their batches of machines to conform with verification procedures that are in accordance with the specifications given in the specific labelling codes based on clause 7.

This part of ISO 7574 does not deal with the consequences that ensue if the stated value is not confirmed as verified for a batch (lot) of machines.

Committee
EH/1
DevelopmentNote
Also numbered as EN 27574-4 and ISO 7574-4 Supersedes 84/52397 DC (09/2005)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current

BS 7135-3:1989 Noise emitted by computer and business equipment Method for determining and verifying declared noise emission values
BS 6805-2:1987 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Method for determining and verifying stated values for individual machines
BS 6686-2.2(1990) : 1990 METHODS FOR DETERMINATION OF AIRBORNE ACOUSTICAL NOISE EMITTED BY HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - PARTICULAR REQUIREMENTS - FORCED DRAUGHT CONVECTION HEATERS
BS 6805-3:1987 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Method for determining and verifying stated values for batches of machines using a simple (transition) method
BS 6805-1:1987 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Glossary of terms

ISO 4871:1996 Acoustics — Declaration and verification of noise emission values of machinery and equipment
BS 6805-3:1987 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Method for determining and verifying stated values for batches of machines using a simple (transition) method
BS 4196-4:1981 Sound power levels of noise sources Engineering methods for determination of sound power levels for sources in free-field conditions over a reflecting plane
BS 4196-2:1981 Sound power levels of noise sources Precision methods for determination of sound power levels for discrete-frequency and narrow-band sources in reverberation rooms
BS 4196-5:1981 Sound power levels of noise sources Precision methods for determination of sound power levels for sources in anechoic and semi-anechoic rooms
BS 6002:1979 Specification for sampling procedures and charts for inspection by variables for percent defective
BS 4196-1:1981 Sound power levels of noise sources Precision methods for determination of sound power levels for broad-band sources in reverberation rooms
BS 4196-3:1981 Sound power levels of noise sources Engineering methods for determination of sound power levels for sources in special reverberation test rooms
BS 6805-1:1987 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Glossary of terms

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