EN 13274-7:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetrationOprema za varovanje dihal - Metode preskušanja - 7. del: Ugotavljanje penetracije delcev v filterAppareils de protection respiratoire - Methode d'essai - Partie 7 : Détermination de la pénétration des filtres à particulesAtemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung des Durchlasses von PartikelfilternTa slovenski standard je istoveten z:EN 13274-7:2008SIST EN 13274-7:2008en,fr,de13.340.30ICS:SIST EN 13274-7:20031DGRPHãþDSLOVENSKI
STANDARDSIST EN 13274-7:200801-maj-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13274-7January 2008ICS 13.340.30Supersedes EN 13274-7:2002
English VersionRespiratory protective devices - Methods of test - Part 7:Determination of particle filter penetrationAppareils de protection respiratoire - Methode d'essai -Partie 7 : Détermination de la pénétration de filtres àparticulesAtemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung desDurchlasses von PartikelfilternThis European Standard was approved by CEN on 5 December 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13274-7:2008: E

Test results - Uncertainty of measurements.17 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directives.18

1 Scope This European Standard specifies the procedure for testing particle filter penetration for respiratory protective devices. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 132:1998, Respiratory protective devices — Definitions of terms and pictograms EN 13274-5, Respiratory protective devices — Methods of test — Part 5: Climatic conditions 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 132:1998 apply. 4 Pre-requisites In order to implement this part of EN 13274, at least the following parameters need to be specified in the appropriate device standard:  items to be tested;  number of samples;  test method(s);  flow rate through the filter;  sequence of conditioning phases, where more than one is required;  specification of any observations to be carried out;  sample preparation and orientation;  sample holding;  in the case of the exposure test, the specified mass of test aerosol;  pass/fail criteria;  any deviations from this method.

The aerosol produced by this method is polydisperse with a mass median particle diameter of approximately 0,6 µm. The particle size distribution is given in Figure 3. It has been found that the aerosol remains constant, within acceptable limits, with respect to particle size and concentration provided that the supply pressure is in the range from 3,3 bar to 3,6 bar and the flow rate of air to the three nozzles is from 12,5 I/min to 13,0 I/min. The output is mixed with 82 I/min of dry air in a chamber with a minimum volume of 1 750 cm3 giving a total flow rate of 95 l/min. NOTE 1 The sodium chloride solution in the atomizer is consumed at a rate of approximately 15 ml/h. This loss is due in part to the atomization of the solution and in part to evaporation of water from the res
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