Question about Analog multimeter accuracy

Marley

Joined Apr 4, 2016
487
FS is Full Scale.
I think they use "arc" for the resistance ranges is because they specify the accuracy at half-scale.
Full scale on resistance is infinity. What is a percentage of infinity? (!)
So the accuracy is % of the number of degrees.
BTW: Some think that meters with a digital readout are more accurate. Not necessarily true! Just because the display says 1.334V (for example) does not mean that it is correct to the last (or any) digit!
 

KeithWalker

Joined Jul 10, 2017
2,456

Thread Starter

planetElectron

Joined May 5, 2022
17
Thanks to everyone, just to be sure,
if 1000 DCV range (±3% F.S.) is selected,
then 3% of full scale 1000, 30 should be added/subtracted to/from reading values?
 
Last edited:

crutschow

Joined Mar 14, 2008
30,463
then 3% of full scale 1000 = 30 should be added/subtracted to/from reading values?
It means the actual value can be anywhere within ±30 of the meter reading.

That relatively low accuracy (and low resolution) is why digital meters are usually preferred over analog meters.
The only advantage of a analog meter I see, is that you can more readily follow a slowly changing voltage.
 
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