描述
过程通道出现最多是卡件故障或就地总线故障。一种原因是卡件本身厂时间工作,元器件老化或损坏;另外,因外部信号接地或强点信号串入卡件也会导致通道故障。现在一般卡件本身都采取了良好的隔离措施,一般情况下不会导致故障的扩大,但此类故障一旦出现,则直接造成过程控制或监控功能的不正常。所以要及时查明故障原因,及时进行更换卡件。
Varian TV 551 MacroTorr Turbo Vacuum Pump Rebuilt
Varian Factory Rebuild with Six Month Warranty
One-day shipping available
EBARA ET-2500WS Turbo Vacuum Pump, 2500 WS, Surplus New
One-day shipping available
Edwards iQDP40 Vacuum Dry Pump 1yr warranty
Used: Ingersoll-Dresser multistage ring vacuum pump, mo
Used: Sihi Vacuum pump, size 3×2, carbon steel, 6 stage