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  • Users: olame
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  1. olame

    What is "Soft I/O"?

    Please can someone explain the meaning of the term "Soft" I/O to me with respect to input and output of a Control system ?
  2. olame

    Estimating number of Marshalling and System cabinets

    Please does any one know any application or spreadsheet for quickly estimating the number of Marshalling and System cabinets required for a DCS control system- assuming the number of I/O s to be terminated are known ?
  3. olame

    Interlocking three on/off valves

    Helpfull members, I want to interlock three on/off valves with a pneumatic 3/2 solenoid valve on each valve such that only one of the valve can open at a time. Can anybody propose a scheme for this?
  4. olame

    What does Ex"de" protection method really mean?

    Does anyone know what Ex"de" hazardous area equipment protection really mean?. Ex"d" means flame-proof while Ex"e" means increased-safety, these are based on two different principles hence I am a little confused on how the two can be combined together for the same equipment.

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