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  1. mweleski

    Minimum Arc Distance - ChemE needs some help from some EEs!

    Hi - I apologize in advance in that I wasn't exactly sure in which forum to place this question. Here is my scenario: A 15 micron diameter tungsten wire will have 4700 Volts (DC) on it. The space between the wire and its surroundings is filled with clean plant air which is relatively humid –...
  2. mweleski

    Small diameter Pipe / Tubing inspection suggestions?

    Yes, cloa is correct... I'm just dealing with what I was handed to me. But we're planning redesigns now, and the piggable thing gives me something to ponder. Thanks!
  3. mweleski

    Small diameter Pipe / Tubing inspection suggestions?

    Thanks. 30 meters is plenty. I'd probably be ok with only 5-10 meters of length. I was trying to figure out what the smallest diameter tube one could inspect with this device .. I'll call Omega and check when I get a sec. I am guessing this is the 0.2" they are referring to. Another difficulty...
  4. mweleski

    Small diameter Pipe / Tubing inspection suggestions?

    I've got a process by-product stream that has lengths of 1" stainless pipe that takes several twists and turns but it wasn't properly designed with cleanouts and there are no pressure taps. The stream is a corrosive gas mixture which results in significant tar/goo/sludge (basically various poly...
  5. mweleski

    On-Site Process Gas Analysis Services?

    We run a hot-wire CVD process. We flow both inert and hazardous gases to achieve this. From what we know about our process, we know that it is very very sensitive to gas purity, accurate metering of gas flows, and extremely intolerant of water / oxygen contamination. We could really use some...

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