描述
如果主要是模拟量控制、并且函数运算很多,最好采用dcs。dcs在控制器、i/o板、通讯网络等的冗余方面,一些高级运算、行业的特殊要求方面都要比plc好的多。plc由于采用通用监控软件,在设计企业的管理信息系统方面,要容易一些。
PUMPING SYSTEM ALCATEL DRYTEL 30 – REFURBISHED
RECTANGULAR GATE VALVE VAT – TESTED
ROTARY VANE VACUUM PUMP LEYBOLD D8A – REFURBISHED
TURBOMOLECULAR PUMP ALCATEL 5401 – REFURBISHED
ANGLE VALVE VAT DN 40 , Série 28.3 – NEW
ASSEMBLY HEATHER ISO FILTER – NEW
BARATRON GAUGE MKS 621C 1000 TORR. NEW FAB SURPLUS
BELLOWS VALVE SWAGELOK SS-BN2786-C NEW
BELLOWS VALVE SWAGELOK SS-BN2786-PB-O – NEW
MASS FLOW CONTROLLER AERA FC-D980C Gas:Ar Range:100Sccm
ELECTROVALVE DISCO ENGINEERING SERVICE MOGCH616–DY