产品名称:  CBDL防爆电铃（ⅡB、ⅡC） 适用范围Application 1区、2区危场所。IIA、IIB、IIC类爆竹性气体环境.Can be used in Zone 1 and Zone 2one 2 dangerous places.Can be used in IIA,IIB 、IICgroup explosive atmosphere.型号含义Model implication产品特点Features 铸铝合金外壳,表面喷塑. 圆筒隔爆面,防爆性能好,安全可靠. 铃碗表面镀铍青铜,打击时不会引起火华.符合GB3836-2000,IEC60079 标准要求.The shell is of diecasted Al-alloy with plastic-sprayed surface.Cylinder enclosure can be well explosion-proof,safe and secure.The surface of bell is brass plated,which won’t produce sparkle when being hitten.Suitable for GB3836-2000,IEC60079 standard request. 主要技术参数Main technical parameters使用类别Usage额定电压（V）Rated voltage功率（W）Power音响强度（dB)Sornd level铃盖直径Bell cover防爆标志Ex-mark防护等级Protection grade进线口螺纹（G")Protectiongrade电缆外径(Φmm))Cable’s outerdiameterACAC36、110、220、22024、36、110、220≤20≥75(R=2m)125Exd II BT6*Exd II BT6IP543/48-14外形及安装尺寸Outlinge and installing dimension