BDL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,**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")Protection grade 电缆外径(Φmm))Cable’s outerdiameter ACAC 36、110、220、22024、36、110、220 ≤20 ≥75(R=2m) 125 Exd II BT6*Exd II BT6 IP54 3/4 8-14