描述
目前,由于PLC把专用的数据高速公路(HIG HWAY)改成通用的网络,并逐步将PLC之间的通信规约靠拢使得PLC有条件和其它各种计算机系统和设备实现集成,以组成大型的控制系统,这使得PLC系统具备了DCS的形态,这样,基于PLC的DCS系统目前在国内外都得到了广泛的应用。
TWO CTI CRYOGENICS 8107813G001, 8F cryopump, used
DRY PUMP EDWARDS GV80 DP80 – REFURBISHED
CTI CRYO-TORR PUMP MDL 8F W/ CONTROLS AND GAUGES
INCLUDES A WHOLE PALLET OF VERY EXPENSIVE GOODIES LOOK!
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LPHR55312 SIHI VACUUM PUMP
LPHR55312 SIHI VACUUM PUMP
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SC-6 NASH VACUUM PUMP, C/S
Nash TC5 Vacuum Pump with drive
VARIAN TRI-SCROLL VACUUM PUMP 310 PTS03101UNIV