IEC 60079-28 Ed. 2.0 b PDF

IEC 60079-28 Ed. 2.0 b – Explosive atmospheres – Part 28: Protection of equipment and transmission systems using optical radiation

IEC 60079-28:2015 specifies the requirements, testing and markingof equipment emitting optical radiation intended for use in explosive atmospheres. It also covers equipment locatedoutside the explosiveatmosphere or protected by a Typeof Protection listed in IEC 60079-0, but which generates optical radiation thatis intended to enter an explosive atmosphere. It covers Groups I, II and III, and EPLs Ga, Gb, Gc, Da,Db, Dc, Ma andMb. This standard does not cover ignition by ultraviolet radiation and by absorption of the radiation in the explosive mixture itself. Explosive absorbers or absorbers that contain their own oxidizer as well as catalytic absorbers are also outside the scope of this standard. This second edition cancels and replaces the first edition, published in 2006, and constitutes a technical revision. Refer to the Foreword of the document for a complete listing of the technicalchanges between edition 2.0 and previous edition of the document. Keywords: equipment emitting optical radiation intended for use in explosive atmospheres