IEC_60534-8_2.pdf

IEC 534 PT*8-2 93 4844893 O335603 7 H NORME CE1.INTERNATIONALE IEC 534-8-2 INTERNATIONAL STANDARD Premire dition First edition 1991-05 Vannes de rgulation des processus industriels Partie 8:Considrations sur le bruit Section 2:Mesure en laboratoire du bruit cr par un coulement hydrodynamique dans une vanne de rgulation Industrial-process control valves Part 8:Noise considerations Section 2:Laboratory measurement of noise generated by hydrodynamic flow through control valves Numro de rfrence Reference number CEI/IEC 534-8-2:1991 COPYRIGHT International Electrotechnical CommissionLicensed by Information Handling ServicesCOPYRIGHT International Electrotechnical CommissionLicensed by Information Handling ServicesRvision de la prsente publication Revision of this publication Lc contenu technique des publications de la CE I est cons-tamment nvu par la Commisaion afin dassurer quil rcflhte bien ltat actuel de ia techaique.Lcs renseignements relatifs ce rava de rvision,ltablissement des Wons rviS6cs et aux miscs jour peuvent Etxe obtenus aupd des Comits natimaux de la CE1 e t en consultant les documents ci&asous:The technical content of I E C publications is kept under con-stant review by the I E C,thus ensuring that the content reflects current technology.Information on the work of revision.the issue o f revised edi-tions and amendment sheets may be obtained from IEC National committees and f r o m the following I E C sources:BuiidindelaCEI AnnuPiredela CE1 Catalogue des publications de la C EI Publi annuellement IECBuiietin IECYearbook Catalogue of I E C Publications Published yearly Terminologie En ce qui concerne la temiinologie gnrale,le lecteur se reportera la publication 50 de ia CE I:V o c a b u l a i r e Eiechro-technique International 0,qui eat tablie BOUS fome de cha-pitres spds traitant chacun dun sujet dfini,lIndex gnral tant publi Stpailment.Des dtails complets sur le W i peuvent tre obtenus sur demande.Lcs termes et dfinitions figurant dans la pdBaiC publication ont t soit rcprie du VEI,mit spcinquancnt approuvcS aux nnS de cette publication.Symboles graphiques et littraux Pour les symboles graphiques,symboles littoraUX et signes dusage gnral approuvs par la C E I,le lecteur consultem-ia Publication 27 de la C E I:Symboles litt&raux uiiser en lectrotochaique;-la Publication 617 de la C E I:Symboles graphiques pour schmas.Les symboles et signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de ia CEI,soit spcifiquanent approuvs aux fins de cette publidon.Pubiications de la C E I tablies par le mme Comit dEtudes Lattention du leccur est atti?sur le deuxihne fede4 de la couvemire,qui numre les publications de la CE1 prpares par le comit dEhides q u i a tabli la prsente publication.Terminology For general terminology,readers arc referred to I E C Publi-cation 50:International Eicctrotechnical V o c a b u l a r y (IEV),which is issued in the form of separate chapters each dealhg with a specific field,the Gaieml Index being published as a se parate booklet.Full details of the iEV wii be supplied on request.Thc terns and definitions contained in the present publication have either been taken from the IEV or have been specifically approved for the pupose o f this publication.Graphical and letter symbols For graphical symbols,and kiter symbols and signs approved by the I E C for general use,mdem are=f e d to:-I E C Publication 2:Letter symbols to be used in electrical technology;-I E C Publidcm 617:Graphical symbols for diagrams.Thc symbols and signs contained in the present publication have either baen taken from IEC Publications 27 or 617,or have been specincally approved for the purpose of this pubWon.I E C publications prepared by the same Technical Committee The attention o f naders is drawn to the back cover,which lists IEC publications issued by the Technical Committee which has p r e v d the present publication.COPYRIGHT International Electrotechnical CommissionLicensed by Information Handling ServicesCOPYRIGHT International Electrotechnical CommissionLicensed by Information Handling ServicesNORME C E-I INTERNATIONALE IEC INTERNATIONAL STANDARD 534-8-2 Premire dition First edition 1991-05 Vannes de rgulation des processus industriels Partie 8:Considrations sur le bruit Section 2:Mesure en laboratoire du bruit cr par un coulement hydrodynamique dans une vanne de rgulation Industrial-process control valves Part 8:Noise considerations Section 2:Laboratory measurement of noise generated by hydrodynamic flow through control valves COPYRIGHT International Electrotechnical CommissionLicensed by Information Handling ServicesCOPYRIGHT International Electrotechnical CommissionLicensed by Information Handling Services.I E C 534 PT*8-2 91 4844893 OLL5606 2-2-SOMMAIRE 534-8-2 O CE1 Pages AVANT-PROPOS.Artides Domaine dapplication.Rfrences normatives.Dfinitions.Dispositif dessai.Rapport de pression carac6ristique xFz.Prooedures dessai.Rsultats dessai.Tableau 1.Tuyauterie de la sect