I need an ammeter that doesn't suck.

Discussion in 'OT Technology' started by deusexaethera, Sep 4, 2009.

  1. deusexaethera

    deusexaethera OT Supporter

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    Have you ever noticed that your typical multimeter freaks out when you try to measure the amperage of an AA battery? I need a multimeter that is capable of measuring several amps, not just a few hundred milliamps. Suggestions?
     
  2. Tom93R1

    Tom93R1 Member

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    Hit up some pawn shops, out here in AZ you can always find good deals on Fluke meters. I think 10A is pretty typical max current for Flukes.
     
  3. deusexaethera

    deusexaethera OT Supporter

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    Is that the go-to brand for people who need something better than a toy?
     
  4. rsxm5

    rsxm5 OT Supporter

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    Fluke makes great stuff generally
     
  5. caddymac

    caddymac New Member

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    In the electrical service industry, electricians don't meter something, they "Fluke" it.
     
  6. mobbarley

    mobbarley Active Member

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    just don't buy a $10 one, spend 80-200
     
  7. bovine

    bovine New Member

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    Buying a Fluke as a hobby MM is ridiculous. If you have $200-400 to drop, fine get one, it's your money. Otherwise get a $40-50 Mastech or Extech MM.

    If you have to get a Fluke though, get a 117. Anything more would be way more than you'd likely need.

    By the way, my major was in electrical engineering and I made due just fine for 4 years with a $5 MM.
     
  8. bovine

    bovine New Member

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    BTW, are you just shorting the battery with the multimeter or are you measuring the amperage with a load attached?
     
  9. mobbarley

    mobbarley Active Member

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    he is trying to blow the fuse by shorting a battery.
     
  10. bovine

    bovine New Member

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    Apparently. Although I would think a AA would have enough internal resistance that it wouldn't bust a fuse / break the ammeter.
     
  11. mobbarley

    mobbarley Active Member

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    in AA its unlikely unless using a crappy meter, anything larger and they can provide a surprising amount of juice at the first instant, it goes down quickly. Either way if you respect your meter you won't connect its current shunt straight across a power supply.
     
  12. deusexaethera

    deusexaethera OT Supporter

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    More often than not I need to measure the short-circuit amperage of a battery, so I know what it's capable of putting out. In fact, I can't think of the last time I cared how much current was going through a circuit that was already in-use, because I don't test circuits that are already built and functioning properly.
     
  13. mobbarley

    mobbarley Active Member

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    well if you need anything to work at anywhere near its battery's short circuit current then good luck. it is highly dependant on battery charge, age, chemistry, brand, temperature, magnetic north/true north variation etc. Lets hope you're not doing anything more serious than stupid experimentation.
     

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