NS = NS 系列 (Namur)
7 = 5/8”-18UNF x3.89”, 单刀双掷,无接口 7M = M18x99mm,单刀双掷, 无接口
0 = IECEx/ATEX Ex ia IIC, Ex tb IIIC 2 = 一般用途 3 = EAC Ex ia IIC, Ex tb IIIC 6 = NEPSI Ex ia IIC, Ex tb IIIC
2 = 316 不锈钢 B = 铜
1: NJ4-12GM-N 2:NCN4-12GM35-N0 3:NJ4-12GK-SN 4:NJ4-12GK-N 5:NCN4-12GM40-Z0
S1=1m S1=1m S-= -m
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