Fibre optic interconnecting devices and passive components. Fibre optic filters. Generic specificationBS EN 61977: 2010 Fibre optic interconnecting devices and passive components. Fibre optic filters. Generic specification BS EN 61977 is an International Standard which applies to the family of fibre optic filters. These components have all of the following general features: They are passive for the reason that they contain no optoelectronic or other transducing elements which can process the optical signal launched into the input port; They modify the

test methods and performance criteria for aspirating smoke detectors for use in fire detection and fire alarm systems installed in buildings

Components

Service planning

This standard covers mandatory functions which have to be provided on all PS and optional functions with requirements which may be provided

The Key Characteristic focus is intended to improve confidence for part features whose variation has a significant influence on end-product form

EN 50085-2-4

Test on extracts

This code of practice does not deal with the protection afforded to a floor by floor coverings or surface finishes

5 Selecting tools and approaches

content and operation of sector certification schemes for responsible sourcing and supply of construction products

BS EN 1706 is intended to be used in conjunction with EN 576

• Resistance test to corrosion (for metallic parts)