Products > Test Equipment

What's the cheapest 0.02% accuracy handheld meter

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bdunham7:

--- Quote from: miegapele on July 15, 2023, 04:41:41 am ---but I wrote what I need, and that is "cheapest 0.02%" multimeter, so I can sleep calm knowing my AA battery is 1.456V and not some lousy 1.455V. I thought maybe I missed something cheap, but unfortunately such thing does not exist

--- End quote ---

OK, the 10,000 count Fairchild 7000A is specified for 0.01% + 1 count.  I got mine for $100, although you might struggle to find the same deal these days.  And it needed a bit of work too.

miegapele:

--- Quote from: bdunham7 on July 15, 2023, 05:06:54 am ---OK, the 10,000 count Fairchild 7000A is specified for 0.01% + 1 count.  I got mine for $100, although you might struggle to find the same deal these days.  And it needed a bit of work too.

--- End quote ---
Thank you, that's actually way more relevant than all these "but what if you want to measure primary current of nuclear power station transformer" comments.

mwb1100:

--- Quote from: miegapele on July 15, 2023, 04:41:41 am ---so I can sleep calm knowing my AA battery is 1.456V and not some lousy 1.455V

--- End quote ---

Oh my God - there's someone else with that problem?

bdunham7:

--- Quote from: mwb1100 on July 15, 2023, 02:50:21 pm ---
--- Quote from: miegapele on July 15, 2023, 04:41:41 am ---so I can sleep calm knowing my AA battery is 1.456V and not some lousy 1.455V

--- End quote ---

Oh my God - there's someone else with that problem?

--- End quote ---

I would refer you both to this thread:

https://www.eevblog.com/forum/beginners/battery-voltage-reduces-the-longer-it-is-being-mm-voltage-tested/msg4930432/#msg4930432

 :-DD

miegapele:
With 10M input resistance and 4 digits you need to wait quite a long time to see a drop. But with 6 or 7 digit DMM it's quite easily visible. Dave showed it in one of his videos.

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