DWEx explosion proof call station is the subscriber equipment to use at industrial sites and transportation infrastructure within the digital Intercom and PA/GA communication system Armtel DCN.
DWEx is designed for use in potentially explosive gas environment, except for mines and their ground structures that are mine gas hazardous, according to explosion proof marking:
1Ex e ib mb IIC T4 Gb Х
With marking for explosive dust environments:
II 2 G Ex eb ib mb IIC t4 Gb
II 2 D Ex tb IIIC T135 oC IP66 Db
Explosion proof is achieved due to the insulation of its electrical circuits from interaction with potentially dangerous gas environment, by organosilicon thermally conductive compound, as well as providing the electrical connections of speaker, microphone and controls through of “ib” spark-safe circuits.
DW is designed for outdoor use or in industrial premises, in environments with the high levels of humidity, noise, dust and smoke content, including the environments with chemically aggressive gases and vapors, within the wide
range of operation temperatures.