1、BRITISH STANDARD CONFIRMED SEPTEMBER1992 BS 6805-3: 1987 ISO 7574-3: 1985 EN27574-3: 1988 Incorporating Amendment No.1 Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Method for determining and verifying stated values for batches of m
2、achines using a simple (transition) method ISO title: Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) method for stated values for batches of machines UDC 534.6:534.835.46:519.22BS6805-3:1987 This British
3、 Standard, having been prepared under the directionof the Environment andPollution Standards Committee, was published underthe authority ofthe BoardofBSI and comes intoeffect on 30January1987 BSI10-1999 The following BSI references relate to the work on this standard: Committee reference EPC/1 Draft
4、 for comment84/52396DC ISBN 0 580 155560 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Environment and Pollution Standards Committee (EPC/-) to Technical Committee EPC/1, upon which the following bodies were represented: Association of
5、 Consulting Engineers British Broadcasting Corporation British Occupational Hygiene Society British Telecommunications plc Department of Health and Social Security Department of the Environment (Building Research Establishment) Department of Trade and Industry (Air Division) Department of Trade and
6、Industry (National Physical Laboratory) Engineering Equipment and Materials Users Association Health and Safety Executive Incorporated Association of Architects and Surveyors Institute of Acoustics Institute of Occupational Hygienists Institute of Physics Institute of Sound and Vibration Research In
7、stitution of Civil Engineers Institution of Electronic and Radio Engineers Petroleum Industry Association Royal Institute of British Architects Society of Environmental Engineers Transmission and Distribution Association (BEAMA Limited) The following bodies were also represented in the drafting of t
8、he standard, through subcommittees and panels: Advanced Manufacturing Technology Research Institute Agricultural Engineers Association British Compressed Air Society British Engine Group of the Society of Motor Manufacturers and Traders British Steel Corporation Business Equipment Trade Association
9、Cement Makers Federation Department of Trade and Industry (National Engineering Laboratory) Hevac Association Institution of Mechanical Engineers Institution of Production Engineers Rotating Electrical Machines Association (BEAMA Ltd.) Amendments issued since publication Amd. No. Date of issue Comme
10、nts 6300 April1990 Indicated by a sideline in the marginBS6805-3:1987 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Brief history 2 Text of EN27574-3 3 Publications referred to Inside back coverBS6805-3:1987 ii BSI 10-1999 National foreword This Part of B
11、S 6805 has been prepared under the direction of the Environment and Pollution Standards Committee and is identical with ISO7574-3:1985 “Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) methods for stated v
12、alues for batches of machines”. The standard was prepared by subcommittee1, Noise, of Technical Committee43, Acoustics, of the International Organization for Standardization (ISO) with the active participation and approval of the UK. In1988 the European Committee for Standardization (CEN) accepted I
13、SO7574-3:1985 as European StandardEN27574-3:1988. BS6805 at present comprises the following Parts Part 1: Glossary of terms; Part 2: Method for determining and verifying stated values for individual machines; Part 3: Method for determining and verifying stated values for batches of machines using a
14、simple (transition) method; Part 4: Methods for determining and verifying stated values for batches of machines. Further Parts of BS 6805 will be prepared, if required. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Stan
15、dard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the base
16、line as the decimal marker. Wherever the words “ISO7574” or “part of ISO7574” appear, referring to this standard, they should be read as “BS6805” or “Part of BS 6805” respectively. Cross-references International Standard Corresponding British Standard ISO 3741:1975 BS 4196 Sound power levels of nois
17、e sources Part 1:1981 Precision methods for determination of sound power levels for broad-band sources in reverberation rooms (Identical) ISO3742:1975 Part 2:1981 Precision methods for determination of sound power levels for discrete-frequency and narrow-band sources in reverberation rooms (Identica
18、l) ISO3743:1976 Part 3:1981 Engineering methods for determination of sound power levels for sources in special reverberation test rooms (Identical) ISO3744:1981 Part 4:1981 Engineering methods for determination of sound power levels for sources in free-field conditions over a reflecting plane (Ident
19、ical) ISO3745:1977 Part 5:1981 Precision methods for determination of sound power levels for sources in anechoic and semi-anechoic rooms (Identical)BS6805-3:1987 BSI 10-1999 iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are
20、responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. International Standard Corresponding British Standard ISO3746:1979 Part 6:1981 Survey method for determination of sound power levels of noise sources (Identical) B
21、S 6805 Statistical methods for determining and verifying stated noise emission values of machinery and equipment ISO7574-1:1985 Part 1:1987 Glossary of terms (Identical) ISO7574-4:1985 Part 4:1987 Methods for determining and verifying stated values for batches of machines (Identical) Summary of page
22、s This document comprises a front cover, an inside front cover, pagesi to iv, theENtitle page, pages2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside
23、 front cover.iv blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN27574-3 December1988 UDC 534.6:534.835.46:519.22 Key word: Acoustics, noise: sound, engine noise, statistical quality control, statistical analysis. English version Acoustics Statistical methods for determining and verifying st
24、ated noise emission values of machinery and equipment Part3:Simple (transition) method for stated values for batches of machines (ISO7574-3, edition1985) Acoustique; Mthodes statistiques pour la dtermination et le contrle des valeurs dclares dmission acoustique des machines et quipements Partie3: Mt
25、hode simplifie (transitoire) pour valeurs dclares de lots de machines (ISO7574-3, dition1985) Akustik; Statistische Verfahren zur Festlegung und Nachprfung angegebener (odervorgegebener) Geruschemissionswerte von Maschinen und Gerten Teil3: einfaches Verfahren (bergangsregelung) fr Maschinenlose (IS
26、O7574-3, Ausgabe1985) This European Standard was accepted by CEN on15 November1988. CEN members are bound to comply with the requirements of the CEN/CENELEC Rules which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lis
27、ts and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the r
28、esponsibility of a CEN member into its own language and notified to the CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Neth
29、erlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN1988 Copyright reserved to CEN members Ref. No. EN27574-3:198
30、8EEN27574-3:1988 BSI 10-1999 2 Brief history The Technical Board decided with Resolution BT84/1988 to submit the International Standard Since this standard passed the Formal Vote positively without modification, it was approved by CEN as European Standard EN27574-3 In accordance with the Common CEN/
31、CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Statement The text of the International
32、 Standard ISO7574-3, edition1985 was approved by CEN as a European Standard without any modification. Contents Page Brief history 2 0 Introduction 3 1 Scope and field of application 3 2 References 3 3 Definitions 3 4 General 3 5 Guidelines for the determination of thelabelled value, L c , by the lab
33、eller 3 6 Verifying the labelled value for a batch of machines 4 7 Information to be given 4 ISO7574-3:1985, “Acoustics; Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part3:Simple (transition) method for stated values for batches of machine
34、s”. to the Formal Vote.EN27574-3:1988 BSI 10-1999 3 0 Introduction A general introduction to the four-part series of ISO7574 is given in ISO7574-1. For the purposes of this part of ISO 7574, the term “labelled value” stands for all kinds of stated values(e.g. information on a label, the upper noise
35、limit set by an authority, the agreed contract value) for which the methods may be applied. 1 Scope and field of application This part of ISO 7574 is derived from ISO 7574-4. It provides guidelines for determining the labelled value, L c , by the labeller and specifies a simple method for verifying
36、compliance of the noise emissions of a batch (lot) of machinery or equipment with its labelled value, L c . This method may be used when a specific noise labelling code (in accordance with clause 6 of ISO 7574-4) specifying the reference standard deviation, sample size and sampling procedure for the
37、 family of machines does not yet exist. If a specific noise labelling code exists, it shall be used, in which case reference to this part of ISO 7574 shall not be made. This part of ISO 7574 should preferably be used only by agreement, e.g. as reached in the standards relating to the relevant machin
38、ery industry or in a contract. 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 of machines. 2 References ISO 3741, Acoustics Determination of sound power levels of noise sources Precision methods for broad-band sources
39、 in reverberation rooms. ISO 3742, Acoustics Determination of sound power levels of noise sources Precision methods for discrete-frequency and narrow-band sources in reverberation rooms. ISO 3743, Acoustics Determination of sound power levels of noise sources Engineering methods for special reverber
40、ation test rooms. ISO 3744, Acoustics Determination of sound power levels of noise sources Engineering methods for free-field conditions over a reflecting plane. ISO 3745, Acoustics Determination of sound power levels of noise sources Precision methods for anechoic and semi-anechoic rooms. ISO 3746,
41、 Acoustics Determination of sound power levels of noise sources Survey method. ISO 7574-1, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part1:General considerations and definitions. ISO 7574-4, Acoustics Statistical methods for d
42、etermining and verifying stated noise emission values of machinery and equipment Part4:Methods for stated values for batches of machines. 3 Definitions For the purposes of this part of ISO 7574, the definitions given in ISO 7574-1 apply. 4 General When checking compliance of a batch with its labelle
43、d value, this part of ISO 7574 works on the principle that the labelled value indicates the limit below which a specified large proportion of the noise emission values of the batch shall lie. This proportion accounts for both the variability between the machines and the random measurement errors occ
44、urring under reproducibility conditions (see 3.17 in ISO 7574-1). NOTEIn the application of this part of ISO 7574, it is assumed that all measurements will be performed by a testing laboratory which has appropriate test facilities and trained staff. 5 Guidelines for the determination of the labelled
45、 value, L c , by the labeller As the determination of the labelled value for a batch of machines is the sole responsibility of the labeller, this clause is given for guidance only. The measured values of individual machines, , of the relevant batch shall be determined in accordance with the specific
46、 measurement test code for the specific family of machines. (The asterisk in the symbol is used here to differentiate between measurements in conformity with this clause and those in conformity with clause 6.) NOTE 1If such a specific measurement test code does not exist, the methods specified in IS
47、O 3741, ISO 3742, ISO 3743, ISO 3744 and ISO 3745 1)may be used if the installation and operating conditions typical of normal use are clearly stated or agreed. NOTE 2If the specific measurement test code for the family of machines provides more than one mode of operation in normal use, the mode yie
48、lding the highest value ofor the mode agreed upon in the relevant machinery industry or in the contract should be used to determine L c . The installation and operating conditions and the measurement test code used should be clearly stated. The mean value, , is calculated from the measured values, ,
49、 of the individual machines in a sample. 1) This does not preclude the use of other International Standard, e.g. ISO3746, which may from the basic of the special measurement test code. L i * L* L * L i *EN27574-3:1988 4 BSI 10-1999 The labelled value, L c , of a batch of machines may be determined by adding a constant, K, to the mean value of the sample, : In general, it is preferable to choose a sample size as large as practicable in determinations of the mean value in order to reduce the uncertain
