Infrared free air applications subscription-only Section 8: Ancillary accommodation to

Section 8: Ancillary accommodation to flats and maisonettes

60 mesh to 80 mesh

written by the chairman of the drafting panel

o Hinged: side-hung (open in or out)

maintained

Infrared free air applications subscription-only Section 8: Ancillary accommodation toWhat is BS EN 61920 Classification of IR devices about? Infrared (IR) is invisible electromagnetic radiation. BS EN 61920 describes the classification of IR devices into groups and classes to identify and clarify problems caused by mutual interference. Mutual interference is caused by the increasing parallel application of different IR systems. BS EN 61920 considers the wavelength range from 700 nm to 1600 nm and includes all systems based on free air