Description
在DCS系统中，远程I/O采用HART总线比较多。比如现场的变送器，离控制器机柜距璃比较远，把16个变送器来的信号编成为一组，用HART总线把信号送到控制器，空制器同时读进16个变送器来的信号。控制器和变送器两者距离可达1公里以上。
Oil Rotary Piston Vacuum Pump WSSR 7.5K
Roots Vacuum Pump FRU1440 NIB
EC150L NASH VACUUM PUMP SYSTEM
EIM275 EDWARDS VACUUM PUMP, 8.5 KW
EIM275 EDWARDS VACUUM PUMP, 8.5 KW
EIM275 EDWARDS VACUUM PUMP, 8.5 KW
EIM275 EDWARDS VACUUM PUMP, 8.5 KW
10 HP rotary vane vacuum pump by Busch
