The GT-LMTK-88 series industrial and commercial point type combustible gas detector (hereinafter referred to as the detector) is designed and manufactured in accordance with GB3836.1-2010 "Explosive Atmosphere Part 1: General Requirements for Equipment", GB3836.2-2010 "Explosive Atmosphere Part 2: Equipment Protected by Explosion proof Enclosures", GB 12476.1-2013 "Electrical Equipment for Combustible Dust Environments Part 1: General Requirements", and GB 12476.5-2013 "Electrical Equipment for Combustible Dust Environments Part 5: Enclosure Protected Type" tD ".