BS EN 3745-411:2018 – TC:2020 Edition

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Tracked Changes. Aerospace series. Fibres and cables, optical, aircraft use. Test methods – Resistance to fluids

Published By	Publication Date	Number of Pages
BSI	2020	0

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This European Standard specifies two methods of determining the fluid resistance of a fibre optic interconnection device. It shall be used together with EN 3745-100 and EN 3909.

PDF Catalog

PDF Pages	PDF Title
14	National foreword
17	European foreword
18	1 Scope 2 Normative references 3 Test fluids 4 Cleaning 4.1 Initial cleaning 4.2 Intermediate cleaning
19	5 Preparation of test specimens 5.1 General 5.2 Cables 6 Procedures 6.1 Test method 1: occasional contamination 6.1.1 Mount the test sample in its normal operating configuration and maintain at room temperature, or as specified in the product standard. 6.1.2 Dip or spray the test sample with the specified fluid which shall be maintained at the test temperature given in Table 1, or as specified in the product standard. Ensure that the entire surface of the sample is thoroughly wetted. Allow the sample to 6.1.3 Transfer the test sample to a test chamber and maintain at the test temperature for the time specified in the product standard. If not specified, and if method 1 is used the parameters shall be as specified in Table 1 (column temperature °C minimum) 6.1.4 Allow the test sample to return to room temperature, and remain at room temperature for between 1 h and 2 h, visually examine the specimen. 6.1.5 Repeat this procedure for the number of cycles specified in Table 1. 6.1.6 At the end of the test carry out the final examination and conduct any additional tests required by the product standard.
20	6.2 Test method 2: extended contamination 6.2.1 Immerse the test sample fully in the specified test fluid which shall be maintained at the temperature as given in Table 1 and the duration shall be a minimum of (24 ± 1) h. 6.2.2 Transfer the test sample to a test chamber and maintain at the test temperature and for the time specified in the product standard. If not specified, the parameters shall be (65 ± 2) °C for (160 – 0 + 8) h. 6.2.3 At the end of the period allow the test sample to cool to room temperature, and remain at room temperature for between 1 h and 2 h, before being subjected to final examination. 7 Final examination 7.1 General 7.2 Cables 8 Requirements