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Need advise for multimeter

Discussion in 'General Electronics Discussion' started by Lukedumphy, May 12, 2015.

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  1. Lukedumphy

    Lukedumphy

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    May 12, 2015
  2. sunlimpid

    sunlimpid

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    May 12, 2015
    Hi Lukedumphy,
    I don't think multimeter need Bluetooth. This did not much help.
     
  3. 8together5

    8together5

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    May 12, 2015
    recoder function of the multimeter sounds good.If you need the app function you can support it anyway.
     
  4. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Yeah, you are right. Just find it intesting with extra functions.
     
  5. Tha fios agaibh

    Tha fios agaibh

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    Aug 11, 2014
    Tell us what you will use it for at home.
    "Just test the cable sometimes"
    Do you mean for continuity testing, insulation testing or something else?
     
  6. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    This looks interesting, but I think a Wi-Fi version would be even better. Needs more digits and more accuracy to justify buying one. Voice response app is a great idea, especially if you can download different languages.
     
  7. 8together5

    8together5

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    May 12, 2015
    I donot think so about WIFI version would be better, this will lead to greater power consumption.
     
  8. sunlimpid

    sunlimpid

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    May 12, 2015
    Voice response app may be useful, other features did not play a role.
     
  9. Lukedumphy

    Lukedumphy

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    May 12, 2015
    I mean continuity testing, just for simple test. For exmaple, test the battery level, or if the cable is with electricity. Or sometimes when my washing machine broken, I need to test the cable inside to ensure there is no problem on cable.
     
  10. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Is it accurate enough for just home use testing? Like do the conttinuity test. Thank you
     
  11. HellasTechn

    HellasTechn

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    Apr 14, 2013
    I know this may not be exactly what you are looking for but for home use it is just perfect. Check this out:
    mastech ms8216 dmm
     
    Lukedumphy likes this.
  12. Tha fios agaibh

    Tha fios agaibh

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    Aug 11, 2014
    Good advice above.
    A couple more thoughts;
    If your testing a lot of batteries you should by a loaded meter (especially for automotive) or add a resistor across the leads for small batteries.
    When continuity testing an audible beep is a nice feature.
    A true rms feature is important if your measuring a lot of ac.
    If testing primarily for household power, I recommend a solenoid (wiggy) type tester that will not give you false readings because of capacitive coupling.
     
    Lukedumphy likes this.
  13. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Thanks for your advise.Checked it in Amazon.
     
  14. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Thanks for your advise. One more question, for battery testing, I just need to know how much electricity it remains. Is multimeter enough?
     
  15. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    How much charge remains in any battery is a complex function of the chemistry of the battery, the ambient temperature, the unloaded terminal voltage, the loaded terminal voltage, and (for NiCd batteries) the charge/discharge history. The only reliable way to "measure" the remaining charge is to know the charge/discharge history of the battery. There are integrated circuits used for battery management that can do this task fairly well for some battery chemistries. For wet-cell lead-acid batteries, the specific gravity of the electrolyte at a known temperature gives a reliable estimate of the charge condition.

    AFAIK, there is no simple measurement you can make to determine the charge remaining. For primary (non-rechargable) cells, a cell is considered to be at the end of its useful life when the terminal voltage under load is no longer sufficient to power the load.
     
    Last edited: May 13, 2015
  16. Tha fios agaibh

    Tha fios agaibh

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    Aug 11, 2014
    You may have voltage remaining in a battery but with little or no potential current left to drive a load. You want to know how much power is remaining in your battery, not just voltage. Both voltage and current are important factors in a circuit. Multiply them together to get the battery power in voltamps (VA).

    Example; I can have a 9volt battery that is almost dead and still read almost 9volts on a meter. If you put a load (resistance) on that same battery the voltage will probably drop to maybe a few volts. That is why you cant get a good reading without loading (adding resistance) the battery. If the resistance is added and the voltage remains high, the battery power is still strong.

    A typical multimeter is fine, you just have to add a resistor for testing small batteries..
     
  17. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Thanks for so detail explanation of this theory. I learn further knowledge about this from you.:)
     
  18. Lukedumphy

    Lukedumphy

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    May 12, 2015
    Oh... get it. Thanks for your detail reply. I make up my mind to choose this model. Hope it would be fine;)
     
  19. sunlimpid

    sunlimpid

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    May 12, 2015
    They had updated Operation Video, it looks not bad.
     
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