DB34/T 2909-2017 Mining explosion-proof and intrinsically safe sound and light language alarm device main unit
DB34/T 2909-2017 Mining explosion-proof and intrinsically safe sound and light language alarm device main unit
Basic Information
Scope
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of the host of mine-used explosion-proof and intrinsically safe audible and visual language alarm devices. This standard applies to the host of mine-used explosion-proof and intrinsically safe audible and visual language alarm devices (hereinafter referred to as the host). Note: This mine-used explosion-proof and intrinsically safe audible and visual language alarm device host is mainly used in underground car yards and electromechanical rooms of coal mines, central substations, large-scale transportation corridors, pump rooms, and other places. It also provides the necessary DC power to various connected sensors, and issues voice and text alerts after receiving sensor signals.