EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: abdulbadii on December 21, 2021, 02:02:34 pm
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Which MultiMeter best to measure current, analog or digital ?
what technical method is it?
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What kind of current? AC or DC? How much current? mA ranges or hundred of Amperes?
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What kind of current? AC or DC? How much current? mA ranges or hundred of Amperes?
current just current, AC, DC, or etc rate just rate 0.0000001 A or 999 A or etc.
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If you only asked analog or digital then I must say digital. Now if you measure very low current a multimeter would be better than the clamp meter. If you measure 999A then a clamp meter is better. So there is no best for all current measurement.
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What's best? Highest accuracy? Lowest burden voltage? Fastest measurement speed? Most convenient? Any constraints?
Highest accuracy for DC pA? Probably a Keithley or Keysight electrometer. DC mA? Probably Fluke 8588A. Tens or hundreds of A DC? Maybe a LEM DCCT?
Lowest burden voltage? For mA and lower ranges, a feedback ammeter. For higher ranges either a very low value shunt (like uCurrent), a DCCT or a Hall effect sensor.
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The thinking of "there ist one best for all" ist very wide spread in all fields, but only shows that someone has no clue what he or she wants to use it for.
There are allways conditions, which should be met, not only technical like resolution, range, error, speed, interfaces,
but also non-technical like size, user-friendliness, envionment-proof, development- or production-cost, size of market, regulatory settings, colour or design.
Therefore to get some hint, you should know what you want to use your instrument for in which environment. E.G.
- Repair of motors on a vessel
- playing with radio-ciruits at home
- high-voltage installations outdoors
- controlling the charge current of li-ions of your tesla car.
- meassuring discharge currents of lightnings
So first tell us what you think is "clear" for everybody and not such bla bla as from 0.0000000000000000000001 to 9999999999999999 A or you get only bla bla answers like this one. :)
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The OP almost never comes back to reply or clarify his requests.
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The OP almost never comes back to reply or clarify his requests.
He did after my response to him asking what kind of current he wanted to measure. He came back and said current period. He wanted the best meter to measure current AC and DC, very low to very high. So he wanted a do it all current meter.