High-efficiency filters and filter media for removing particles in air. Part 4: Test method for determining leakage of filter elements-Scan method (ISO 29463-4:2011)
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ISO 29463-4:2011 specifies the test procedure of the "scan method", considered to be the reference method, for determining the leakage of filter elements. It is applicable to filters ranging from classes ISO 35 H to ISO 75 U. ISO 29463-4:2011 also describes the other normative methods: the oil thread leak test and the photometer leak test, applicable to classes ISO 35 H to ISO 45 H HEPA filters, and the leak test with solid PSL aerosol. ISO 29463-4:2011 is intended for use in conjunction with ISO 29463-1, ISO 29463-2, ISO 29463-3 and ISO 29463-5.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test filter
6 Test apparatus
6.1 Set-up of the test apparatus
6.2 Test duct
6.3 Scanning assembly
6.4 Aerosol generation and measurement techniques
7 Test air
8 Procedure
8.1 General
8.2 Preparatory checks
8.3 Starting up the aerosol generator
8.4 Preparing the test filter
8.5 Testing
9 Test report
10 Maintenance and inspection of the test apparatus
Annex A Oil thread leak test (normative)
Annex B Aerosol photometer filter scan test method (normative)
Annex C Determining the test parameters (normative)
Annex D Example of an application with evaluation (informative)
Annex E Leak test with solid PSL aerosol (informative)
Annex F 0,3 μm to 0,5 μm particle efficiency leak test (informative)
Annex G Calculation of aerosol challenge (informative)
ISO 29463-1:2011 High-efficiency filters and filter media for removing particles in air -- Part 1: Classification, performance testing and marking
ISO 29463-2:2011 High-efficiency filters and filter media for removing particles in air -- Part 2: Aerosol production, measuring equipment and particle-counting statistics
ISO 29463-3:2011 High-efficiency filters and filter media for removing particles in air -- Part 3: Testing flat sheet filter media
ISO 29463-1:2011 High-efficiency filters and filter media for removing particles in air -- Part 1: Classification, performance testing and marking
ISO 29463-2:2011 High-efficiency filters and filter media for removing particles in air -- Part 2: Aerosol production, measuring equipment and particle-counting statistics
ISO 29463-3:2011 High-efficiency filters and filter media for removing particles in air -- Part 3: Testing flat sheet filter media
ISO 29463-5:2011 High-efficiency filters and filter media for removing particles in air -- Part 5: Test method for filter elements
ISO 29464:2017 Cleaning of air and other gases -- Terminology
ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full -- Part 1: General principles and requirements