描述
屏蔽地(AG,Analog Grounding)
也叫模拟地,它可以把现场信号传输时所受到的干扰屏蔽掉,以提高信号精度。DCS系统中信号电缆的屏蔽层应做屏蔽接地。线缆屏蔽层必须一端接地,防止形成闭合回路干扰。铠装电缆的金属铠不应作为屏蔽保护接地,必须是铜丝网或镀铝屏蔽层接地。接入公共接地极。
GIDDINGS & LEWIS M.1016.9264 NSFP M10169264
GIDDINGS & LEWIS 502-03786-02 NSFP 5020378602
GIDDINGS & LEWIS 502-03550-02R0 USPP 5020355002R0
NEW GIDDINGS LEWIS 5031527528 BOARD PMC POUCH KING
GIDDINGS & LEWIS 502-03195-08 USPP 5020319508
GIDDINGS & LEWIS 502-03195-16 NSPP 5020319516
GIDDINGS & LEWIS 502-02659-00 NSPP 5020265900
Giddings & Lewis 502-02804-50 EIA Interface Board