描述
外部设备的信号通过冗余配置(模拟量)或通过扩展转换(开关量)分别送入2套DCS系统。同时因保证不出现误操作事故，还增加了相当部分的判据条件和I／0测点，这种方式的优点是当一台机组停运或检修，可以较方便地对DCS进行检查，同时也增大了控制的可靠性，缺点是增加了外部设备的数量
Lobe for Nash 904 L liquid ring pump, Iron
Leybold Inficon Turbovac 1000C Turbo Pump REPAIR
One-day shipping available
Edwards iQDP80 Vacuum Pump QMB250 Blower Rebuilt
EDWARDS QDP80 DRY SEMICONDUCTOR DRYSTAR VACUUM PUMP+CTL
Leybold Turbovac 1000 C Vacuum Turbopump rebuilt
Toyota T600 Vacuum Dry Pump 0240-52730 new
Toyota T600 Vacuum Dry Pump new 0240-52729
CL1002 NASH VACUUM PUMP, 60 HP
Used: Nash vacuum pump, type CL1003. Approximately 330
Used: Nash vacuum pump, type CL1003, Approximately 330
Super Vac Vacuum Sealer (does not include pump)
Busch Cobra DS-80 Dry Pump – Used
3 GS Kinney KT-150 Vacuum Pump Rotary Piston
