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  • Users: rhirsch
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  1. rhirsch

    Hazardous Location cert?

    Hi, I would be cool with any cert that I would need to do, if I knew if I needed it, and which one. I am building a machine, and I will certainly need to follow NFPA 79, becuase its a machine with a control box. fine. Here is my question: The machine will not be used in a hazardous location...
  2. rhirsch

    feel like a total idiot - temp rise in heated pipe

    I've searched for this throughout the forums. Its seems so simple, but I am simply not getting it: I have a pipe with gas flowing in it. I know the input temp and output temp I want. I know how much power I am going to put to the heater I know the diameter. I know the flow rate. I think I know...

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