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BSI PD ISO/TS 19850:2022:2023 Edition

BSI PD ISO/TS 19850:2022:2023 Edition

$142.49

Fire tests. Use of LED (light-emitting diode) as an alternative to white light for measuring smoke parameters

Published By Publication Date Number of Pages
BSI 2023 28
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
10 5 Principle
6 Overview of smoke measurement used in existing light extinction test methods
6.1 General
11 6.2 Light-receiving system
6.3 Measuring device
6.4 Neutral density filter comparison
7 LED light sources
8 Comparison of spectra from different light sources
12 9 Method of measurement in each apparatus where the white light system is originally installed
9.1 General
13 9.2 Comparison between the original white light and the new LED in ISO 9705‑1
9.2.1 General
14 9.2.2 Method A
15 9.2.3 Method B
9.3 Comparison between the original white light and the new LED in ISO 24473
9.4 Comparison between the original white light and the new LED in ISO 9239‑1
9.4.1 General
16 9.4.2 Method B
17 9.5 Comparison between the original white light source and the new LED source in EN 13823
9.5.1 General
9.5.2 Method A
18 9.5.3 Method B
9.6 Comparison between the original white light source and the new LED source in IEC 61034‑1
9.6.1 General
19 9.6.2 Method B
20 10 Test fire sources
10.1 General
10.2 For standard tests in which a burner is used
10.3 For standard tests in which radiant heat is used
10.4 For standard tests in which liquid fuel is used
21 10.5 For the standard tests in which the fire source is not prescribed
11 Alternative method
11.1 General
11.2 Overview of apparatus
22 11.3 Smoke generator
23 11.4 Flexible hose
11.5 Exhaust fan
11.6 Duct
11.7 Light source system
11.8 Test environment
11.9 Test procedure for static system
24 12 Comparing the experimental results from the original white light and the candidate LED
12.1 General
12.2 Calculation method — transmission
25 Annex A (informative) Example of measurements in the IEC 61034‑1:2005 apparatus
27 Bibliography

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BSI PD ISO/TS 19850:2022
$142.49