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  • Users: jjr1111
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  1. jjr1111

    piping vibrations

    Have a filtering system that is experiencing vibrations and was posting for into in the vibration forum, but and wondering if it could be related to piping system design so wanted to post up here too. The setup is a PD pump that pumps fluid from a tank through a filter and returns to the...
  2. jjr1111

    high vibrations in pd pump, gearbox, motor combo on movable base

    Have a application that flagged high for vibration and unsure how to proceeded. Vibration testing gave the following readings: motor NDE - 1.494 ips, .11g. pump - .365 ips, 1.02g Pump is a PD pump is mounted to baseplate 1" thick on wheels. Gearbox and motor are direct coupled and not mounted...
  3. jjr1111

    vibration tester for doing rounds

    I'm close to purchasing a vibration tester for doing rounds, and am considering Adash's signal analyzer box, and using a tablet for the interface. This is around 18k or so, I chose this route instead of going with emerson's AMS 2140 mainly due to not having enough funds for the AMS and that...
  4. jjr1111

    self priming pump loosing prime

    HI all, I have a question I'm curious on opinions on. I have a sump crock with that has two pumps. One is to discharge to a equalization tank that runs off tank level so comes on and off frequently, and the other is a recirculation line that goes through a PH meter, this pump is supposed to...
  5. jjr1111

    Frequency analysis in OSI Pi

    Anyone out there using a Pi historian for vibration analysis in the frequency domain?
  6. jjr1111

    why do we have yeild instead of just using proof

    Dumb question, but curious on thoughts. I know with fasteners proof is used, as the max of the elastic limit, but then we have yield which is a .2% plastic deformation, so more of a measure of when failure begins. My question is I see yield used much more commonly, but wouldn't it be better to...

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