1、January 2011 Translation by DIN-Sprachendienst.English price group 14No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 13.040.40!$l|“1739889www.din.deDDIN EN 1822-5High efficiency air filters (EPA, HEPA and ULPA) Part 5: Determining the efficiency of filter elementsEnglish translation of DIN EN 1822-5:2011-01Schwebstofffilter (EPA, HEPA und ULPA) Teil 5: Abscheidegradprfung des FilterelementsEnglische bersetzung v
3、on DIN EN 1822-5:2011-01Filtres air haute efficacit (EPA, HEPA et ULPA) Partie 5: Mesure de lefficacit de llment filtrantTraduction anglaise de DIN EN 1822-5:2011-01SupersedesDIN EN 1822-5:2001-02www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered a
4、uthoritative.3001.11 DIN EN 1822-5:2011-01 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 195 “Air filters for general air cleaning” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Norm
5、enausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-09-21-02 AK Schwebstofffilter of Section Allgemeine Lufttechnik. Representatives of stakeholders, manufacturers and users of high efficiency air filters, and of research and testing institutes contributed
6、 to this standard. The European Standards and the International Standard referred to in Clause 2 have been published as the corresponding DIN EN or DIN EN ISO Standards with the same number. EN 1822 comprises 5 parts, which have been revised and published in 2009 as European Standards. Amendments Th
7、is standard differs from DIN EN 1822-5:2001-02 as follows: a) an alternative test method using a solid (instead of a liquid) test aerosol has been added; b) a method for testing and classification of filters made out of membrane type filter media has been added; c) a method for testing and classific
8、ation of filters made out of synthetic fibre media has been added; d) a new group “E” for efficient particulate air filters (EPA) has been added; e) an alternative method for leak testing of group H filters with other than panel shape has been added; f) editorial corrections have been implemented. P
9、revious editions DIN 24184: 1974-10, 1990-12 DIN EN 1822-5: 2001-02 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1822-5 November 2009 ICS 13.040.40 Supersedes EN 1822-5:2000English Version High efficiency air filters (EPA, HEPA and ULPA) - Part 5: Determining the efficiency of filter eleme
10、nts Filtres air haute efficacit (EPA, HEPA et ULPA) - Partie 5: Mesure de lefficacit de llment filtrant Schwebstofffilter (EPA, HEPA und ULPA) - Teil 5: Abscheidegradprfung des Filterelements This European Standard was approved by CEN on 17 October 2009. CEN members are bound to comply with the CEN/
11、CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to
12、 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 responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versio
13、ns. 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, Spa
14、in, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national M
15、embers. Ref. No. EN 1822-5:2009: EContents Page Foreword 4Introduction 51 Scope .62 Normative references .63 Terms and definitions 64 Description of the method .74.1 General 74.2 Measurement method using fixed sampling probe 84.3 Scan method .84.4 Statistical efficiency test method for EPA filters (
16、Group E) .85 Test filter 96 Test apparatus 96.1 General 96.2 Test duct 96.2.1 Test air conditioning 96.2.2 Adjustment of the volume flow rate 96.2.3 Measurement of the volume flow rate 96.2.4 Aerosol mixing section 96.2.5 Test filter mounting assembly .96.2.6 Measuring points for the pressure drop .
17、 106.2.7 Sampling . 106.3 Aerosol generation and measuring instruments . 116.3.1 General . 116.3.2 Apparatus for testing with a monodisperse test aerosol 116.3.3 Apparatus for testing with a polydisperse test aerosol 127 Conditions of the test air 178 Test procedure . 178.1 Preparatory checks . 178.
18、2 Starting up the aerosol generator 178.3 Preparation of the test filter 178.3.1 Installation of the test filter . 178.3.2 Flushing the test filter . 178.4 Testing 188.4.1 Measuring the pressure drop . 188.4.2 Testing with a monodisperse test aerosol 188.4.3 Testing with a polydisperse test aerosol
19、189 Evaluation . 1810 Test report 2011 Maintenance and inspection of the test apparatus 22Annex A (informative) Testing and classification method for filters with MPPS 0,1 m (e.g. membrane medium filters) 23A.1 Background 23A.2 MPPS of filters with Membrane filter medium 23A.3 Penetration consistenc
20、y and uniformity of Membrane filter medium 23EN 1822-5:2009 (E) DIN EN 1822-5:2011-01 2A.4 Procedure for testing and classification of filters with Membrane filter media . 23A.4.1 Integral Penetration 23A.4.2 Classification 24A.4.3 Local Penetration . 24A.5 Publication of data and labelling of produ
21、cts with membrane filter media . 24Annex B (normative) Testing and classification of filters using media with (charged) synthetic fibers . 26B.1 Background . 26B.2 Scope . 26B.3 Procedure for testing and classification of HEPA and ULPA filters using media with (charged) synthetic fibres . 26B.4 Publ
22、ication of data and labelling of products for HEPA and ULPA filters using media with (charged) synthetic fibres . 27Bibliography . 28EN 1822-5:2009 (E) DIN EN 1822-5:2011-01 3Foreword This document (EN 1822-5:2009) has been prepared by Technical Committee CEN/TC 195 “Air filters for general air clea
23、ning”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention
24、 is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1822-5:2000. It contains requirements, fundamental principles of te
25、sting and the marking for efficient particulate air filters (EPA), high efficiency particulate air filters (HEPA) and ultra low penetration air filters (ULPA). EN 1822, High efficiency air filters (EPA, HEPA and ULPA), consists of the following parts: Part 1: Classification, performance testing, mar
26、king Part 2: Aerosol production, measuring equipment, particle counting statistics Part 3: Testing flat sheet filter media Part 4: Determining leakage of filter element (scan method) Part 5: Determining the efficiency of filter elements According to the CEN/CENELEC Internal Regulations, the national
27、 standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
28、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 1822-5:2009 (E) DIN EN 1822-5:2011-01 4Introduction As decided by CEN/TC 195, this European Standard is based on particle counting methods which actually cover most needs of different applications. The d
29、ifference between this European Standard and previous national standards lies in the technique used for the determination of the integral efficiency. Instead of mass relationships, this technique is based on particle counting at the most penetrating particle size (MPPS), which is for micro-glass fil
30、ter media usually in the range of 0,12 m to 0,25 m. This method also allows the testing test ultra low penetration air filters, which was not possible with the previous test methods because of their inadequate sensitivity. For membrane and synthetic filter media, separate rules apply, see Annexes A
31、and B of this standard. EN 1822-5:2009 (E) DIN EN 1822-5:2011-01 51 Scope This European Standard applies to efficient particulate air filters (EPA), high efficiency particulate air filters (HEPA) and ultra low penetration air filters (ULPA) used in the field of ventilation and air conditioning and f
32、or technical processes, e.g. for applications in clean room technology or pharmaceutical industry. It establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid test aerosol, and allows a standardized classification of these filters in t
33、erms of their efficiency. This part of the EN 1822 series deals with measuring the efficiency of filter elements, specifying the conditions and procedures for carrying out tests, describing a specimen test apparatus and its components, and including the method for evaluating test results. 2 Normativ
34、e 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 779:2002, Particulate air filters
35、 for general ventilation Determination of the filtration performance EN 1822-1:2009, High efficiency air filters (EPA, HEPA and ULPA) Part 1: Classification, performance testing, marking EN 1822-2:2009, High efficiency air filters (EPA, HEPA and ULPA) Part 2: Aerosol production, measuring equipment,
36、 particle counting statistics EN 1822-3, High efficiency air filters (EPA, HEPA and ULPA) Part 3: Testing flat sheet filter media EN 1822-4, High efficiency air filters (EPA, HEPA and ULPA) Part 4: Determining leakage of filter element (scan method) EN 14799:2007, Air filters for general air cleanin
37、g Terminology EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements (ISO 5167-1:2003) 3 Terms and definitions For the purposes of this document, the terms and definitions
38、 given in EN 14799:2007 and the following apply. 3.1 sampling duration time during which the particles in the sampling volume flow are counted (upstream or downstream) 3.2 measuring procedure with fixed sampling probes determination of the integral efficiency using fixed sampling probes upstream and
39、 downstream of the test filter EN 1822-5:2009 (E) DIN EN 1822-5:2011-01 63.3 total particle count method particle counting method in which the overall number of particles without size classification can be determined in a certain test volume (e.g. by using a condensation nucleus counter) 3.4 particl
40、e counting and sizing method particle counting method which can determine both the number of particles and also their size distribution (e.g. by using an optical particle counter) 4 Description of the method 4.1 General In order to determine the efficiency of the test filter it is fixed in the test
41、filter mounting assembly and subjected to a test air volume flow corresponding to the nominal volume flow rate. After measuring the pressure drop at the nominal volume flow rate, the filter is purged with clean air and the test aerosol produced by the aerosol generator is mixed with the prepared tes
42、t air along a mixing section, so that it is spread homogeneously over the cross section of the duct. The efficiency is always determined for the most penetrating particle size (MPPS) (see EN 1822-3). The size distribution of the aerosol particles can optionally be measured using a particle size anal
43、ysis system (for example a differential mobility particle sizer, DMPS). The testing can be carried out using either a monodisperse or polydisperse test aerosol. When testing with (quasi-)monodisperse aerosol the total particle counting method can be used with a condensation nucleus counter (CNC) or
44、an optical particle counter (OPC; for example a laser particle counter). It shall be ensured that the number median particle diameter corresponds to the MPPS, i.e. the particle diameter at which the filter medium has its minimum efficiency. When using a polydisperse aerosol, an optical particle coun
45、ter shall be used, which in addition to counting the particles is also able to determine their size distribution. It shall be ensured that the median diameter DMof the test aerosol lies in the range: 5,12 MPPSDMPPSMIn order to determine the integral efficiency, representative partial flows are extra
46、cted on the upstream and downstream sides of the filter element and led to the attached particle counter to measure the number of particles. The integral efficiency can be determined using one of two methods, either with fixed test sampling probes (see 4.2); or with one or several movable sampling p
47、robes downstream (scan method) (see 4.3). In both methods the sample upstream is taken using a fixed sampling probe. The upstream and downstream number concentrations and the integral efficiency are calculated from the particle count, the duration of the sampling and the sampling volume flow rate. E
48、N 1822-5:2009 (E) DIN EN 1822-5:2011-01 74.2 Measurement method using fixed sampling probe Using this method, the downstream sample used to determine the integral efficiency is taken using a fixed sampling probe. It is necessary to have a mixing section behind the test filter to mix the aerosol homo
49、geneously with the test air over the duct cross section (see 6.2.4). 4.3 Scan method This integral efficiency can be determined by averaging the readings from the result of the leak test (scan method). The test rig for the scan method is described in EN 1822-4. In the scan method the downstream sampling is carried
