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。
FOXBORO 870ITPHAYCNZ TRANSMITTER NEW
MITSUBISHI A2USHCPU-S1 CPU MODULE A2USHCPUS1 NEW
FANUC A06B-6079-H101 AMPLIFIER MODULE
NEW DANFOSS VLY 101175B5056 DRIVE 175B6038
NEW CUTLER HAMMER NB3500PT 500A 3P TRIP UNIT
NEW TRANE MOD01388 CLD2 RTU MODULE
NEW TOTAL CONTROL CQPK3D200L2P QUICKPANEL JR
ABB 3HAB2215-1 BOARD DSQC-314A 3HAB22151
NEW MARPOSS 3519928202 PROBE HEAD S/N 05NN0999
NEW TOTAL CONTROL CQPKSTDN0000 QUICKPANEL