BAL1-127G Flameproof bell sound and light combinations

BAL1-127G Flameproof bell sound and light combinations 
 Scope: 
 BAL1-127G Flameproof bell sound and light combinations (hereinafter referred to as the combination of bells) for a methane or coal dust explosion hazards in the coal mine to sound or sound and light signals in situ expression or long-distance signal transmission precautionary purposes. 
 Model meaning: 

 Technical parameters: 
 1, the implementation of the standards: GB 3836.1-2000, GB 3836.2-2000, MT 428-1995; 2, explosion-proof mark: Exd Ⅰ; 3, Rated voltage: 36,127 V AC / 50Hz; 4, Rated current: 0.35A; 5, audio radius: 150m; 6, optical signals visible from: 30m; 7, the cable diameter Φ: 14 ~ 22mm. 
 Features: 
 1, shell and cover are made of high quality cast iron, the two planar surfaces proof bolts and other fasteners by the surface high-voltage electrostatic spray; 2, the transparent cover to increase safety net to protect the transparent cover difficult to break; 3, the signal expression for the speaker sound, light bulbs LED display; 4, through loudspeakers> 85dB sound signal and through the light bulb within 30 meters in the visible light signal.