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描述

从可靠性和可维护性上看,由于电器控制系统使用了大量的机械触点,其存在机械磨损、电弧烧伤等,寿命短,系统的连线多,所以可靠性和可维护性较差。而PLC大量的开关动作由无触点的半导体电路来完成,其寿命长、可靠性高,PLC还具有自诊断功能,能查出自身的故障,随时显示给操作人员,并能动态地监视控制程序的执行情况,为现场调试和维护提供了方便。

MASS FLOW CONTROLLER UNIT UFC-1400A Gas:N2 500Sccm
MASS FLOW CONTROLLER UNIT UFC-1400 Gas:N2 Range:1SLM
MASS FLOW CONTROLLER UNIT UFC-1401A Gas:N2 Range:10Sccm
MASS FLOW CONTROLLER UNIT UFC-1660 Gas:CO2 150Sccm
PROM PROGRAMMER 5 TI 3000 – TESTED
SWAGELOK VALVE 6LV-M5198PX-III​. NEW
TURBOMOLECULAR PUMP LEYBOLD 340MCT. REFURBISHED
SET OF 2 CLAMP 300MM WALKING BEAM CLEANER
DN25 MANUAL VACUUM ANGLE VALVE F-60050 – REFURBISHED
VAT GATE VALVE 02112-BA44-BJ01​/001 A-644100 REFURBISHED
VAT GATE VALVE 02112-BA44-BJ01​/002 A-644100 REFURBISHED