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Multimeter Current Reading

Discussion in 'General Electronics Discussion' started by mcasey, Aug 2, 2017.

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  1. mcasey

    mcasey

    64
    2
    Jul 9, 2016
    I'm sure the answer is obvious, but oh well, here goes...

    If .239 amps is equal to 239 milliamps, why is decimal off two places on my multimeter? The fuse is good.

    upload_2017-8-1_19-34-3.png
     
  2. Tha fios agaibh

    Tha fios agaibh

    2,135
    721
    Aug 11, 2014
    It should read 0ma because your red lead is in the 10A jack.
    Move it to the jack on the right to read mA but do not go over its max. (200mA ? I cant read it clearly)
     
    Last edited by a moderator: Aug 2, 2017
  3. mcasey

    mcasey

    64
    2
    Jul 9, 2016

    Manual says "0" to 10 amperes. What if the current was 201mA? It should read on the DC10A setting with the lead in the 10A jack, correct?





    upload_2017-8-1_20-26-37.png

    upload_2017-8-1_20-30-4.png
     
  4. Tha fios agaibh

    Tha fios agaibh

    2,135
    721
    Aug 11, 2014
    Yes, but you have selected DCma and it will only read when your lead is plugged on the right where ma is read (notice blue color)

    Yes, you can read 201ma plugged in the 10A jack and 10A selected with the rotary knob, but it will read in amps, or .201A

    You shouldn't use the ma jack unless you know its under 200ma. Always start with highest scale or 10A in your case.
     
    Last edited: Aug 2, 2017
  5. mcasey

    mcasey

    64
    2
    Jul 9, 2016
    But it does read. If it did not, as you mentioned above, it would show 0 on the display. Why does it show 2.18 instead of 218?
     
  6. Tha fios agaibh

    Tha fios agaibh

    2,135
    721
    Aug 11, 2014
    Probably because its reading inductively.

    Like I said. Its designed to read on a range that the leads are plugged into.

    If you jumpered (shorted) from com to ma jack, it will likely zero the display.
     
  7. Tha fios agaibh

    Tha fios agaibh

    2,135
    721
    Aug 11, 2014
    Don't select "DCma" unless you have the leads plugged into the proper jacks.
     
  8. mcasey

    mcasey

    64
    2
    Jul 9, 2016
    I understand now. Thank you :)
     
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