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  1. GibbsFE

    How to verify SMA pcb connector

    Hi All, I am not an EE, and honestly as far as I got is Ohm's Law. However, I am having problems with a RF signal either not being properly transmitted or received, and I want to see if there is a way to check connectors with a multimeter? I have two mini SMA connectors - one soldered on a pcb...
  2. GibbsFE

    Flow meter

    If it's feasible, the simplest way would be to use a scale that once satisfied turns off the pump. That way your operators will have a constant visual and would satisfy the low tech old school plant guys who want to toggle manual valves. If you go the MFC way, that is engineering-wise superior...
  3. GibbsFE

    Batch distillation - altering reflux ratio and subsequent batches

    Thanks for your thoughts, StoneCold. 3m is the height. The diameter is 75mm. Our batches aren't all that close together, for safety reasons we let process cool down before a new batch is charged or the reboiler emptied. We are limited in how much heat we can add to the reboiler. I do have more...
  4. GibbsFE

    Great book for those interested in US business history, and how it all went wrong

    The company I work for pays table scraps ($20/hr) for engineers, and we are doing just fine (on paper, perhaps with accounting tricks). Mega-bonuses for the management at the expense of the workers, I'm sure. It doesn't matter if it's sustainable - when the company goes under or is bought out...
  5. GibbsFE

    Two job offers - decision - anyone work for a large global company?

    Sounds like a no-brainer, "A". Unless you like to travel to Asia. The only benefit I've experienced working for a Global Fortune 40 company is that they fully pay for continuing education, generous pier diem expenses for travel, and training programs like you've said. Good reasons, yes, but...
  6. GibbsFE

    Batch distillation - altering reflux ratio and subsequent batches

    StoneCold, New batches are charged on top of previous bottoms for x runs, then the reboiler is emptied and the waste discarded. Front cuts are standard, y amount is taken from each batch independent of time (though the run time doesn't deviate by more than 5%). This method seems to work fine...
  7. GibbsFE

    Did I Ruin My Career?

    I feel for the OP, here. I quit my first job of nearly 5 years chasing a fleeting romantic interest, and that simply devastated my career. I then took a engineering contracting gig for a year, then a position in financial software development, and got laid off when the markets tanked. I moved...
  8. GibbsFE

    Batch distillation - altering reflux ratio and subsequent batches

    Hi all, We have a small (3m) packed column used to purify a chemical. The standard process takes a forecut near total reflux to remove light impurities, then we increase the collection rate to collect the heart after most of the impurities are removed. I have implemented a one-time change to...

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