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  1. EngKen

    Can a cause and effect diagram be used in the design of complex machinery?

    I understand cause and effect diagrams can be used as input to write software for simple applications. What about more complex applications/machinery? What to use than? A control narrative/philosopy?
  2. EngKen

    FIELDBUS for Safety Instrumented System?

    I understand there is a special version of FF designed for the use in safetey instrumented systems. Is this common used? What about other field buses? Are hard wired systems still most used for safety instrumented systems?
  3. EngKen

    Control Principles Used by DCS in Utilities

    Which control principles are commonly used in a DCS in the utilities business? PID? fuzzy logic?
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