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。
2683 NEW Parker 201673 Pressure Regulator
PARKER HYDRAULIC PRESSURE REDUCING VALVE V-21 FT
New Parker CPOM2AAV55X Pilot-Oper. Pressure Check Valve
Expedited shipping available
NIB PARKER BVHP16SSS1NA HIGH PRESSURE BALL VALVE
Expedited shipping available
Parker Hydr. Pressure Reducing Module D03 # BD03PNR-A
Parker 035643000B Pressure Regulator NEW Free Shipping
One-day shipping available