What is BS EN 60793-1-50 - Optical fibres- damp heat tests about?
Optical fibres are used to transmit light between the two ends of the fibre in fibre-optic communications. BS EN 60793-1-50 is a safety standard on Optical fibres. BS EN 60793-1-50 provides a practical method for evaluating fibre performance in a defined environment.
The purpose of BS EN 60793-1-50 is to determine the suitability of optical fibre sub-category A1a to A1d multimode fibres and class B and C single-mode fibres to withstand the environmental condition of high humidity and hot temperature which may occur in actual use, storage, and transport. The test described in BS EN 60793-1-50 is primarily intended to permit the observation of the effects of high humidity at a constant temperature over a given period. This procedure is conducted in accordance with IEC 60068-2-78, Test Cab.
Note: The applicability of this test to other fibre categories is under study.
Who is BS EN 60793-1-50 - Optical fibres- damp heat tests for?
BS EN 60793-1-50 on optical fibres- damp heat tests:
- Manufacturers of A1a to A1d fibres
- Manufacturers of class B and C single-mode fibres
- Manufacturers of testing apparatus
- Suppliers of fibre optic products
- Manufacturers of fibre optic cables
- Testing authorities of Damp heat tests
Why should you use BS EN 60793-1-50 - Optical fibres- damp heat tests?
For optical measurements, the length of the specimen shall be at least 1 000 m for fibre subcategories A1a to A1d, and at least 2 000 m for fibre class B and C, to allow the required measurement repeatability.
BS EN 60793-1-50 provides guides on the Damp heat (steady state) tests. The preparation of the specimen shall have no detrimental effect on the fibre whilst under test conditions. Unless otherwise defined in the detail specification, BS EN 60793-1-50 recommends that the fibre sample be loosely coiled and dusted with a material such as talcum powder, to allow the coils to move freely against each other. The specimen may be coiled horizontally or vertically, with a minimum bend diameter of 150 mm to avoid any macro-bend effects.
Overall, BS EN 60793-1-50 is useful as it guides the measurement methods for the Damp heat (steady state) tests which can help you out in your business.