Hello.
An interesting comparison starts here. For one AM-140 you can get five VC99...
But, if it's necessary:
On the Brymen, note that the specs are actually only given for 4-1/2 digits (50,000 counts). ![Shocked :o](https://www.eevblog.com/forum/Smileys/default/shocked.gif)
It would be reasonable to multiply the "+/- n digits" x 10 to get an estimate for 500,000 count mode.
At AC V the 500,000 count mode doesn't exist. It's only available at DC V.
To compare the AM-160/Extech MM-570/Brymen-859 or Brymen-869 (nearby AM-140/
Extech MM-560/Brymen-857 or Brymen-867) with the Vichy-99, it would be reasonable
to divide the "+/- n digits" /10 to reach the same level of visible counts in display.
Vichy claims at the best range 0.8% + 5 Digits at AC V. Sine-wave RMS.
Brymen claims at a usual range (not the best!) 0.5% + 40. True RMS.
E.g. measuring exact 24.000 V AC and doing some math...
Vichy99 is in spec between
23.75 and
24.25 V.
Brymen-869 can show you
23.840 and
24.160 V.
Which multimeter is more accurate?
Don't forget:
- TRMS
- Brymen/Am etc. are fast as hell
- Measures are repeatable
- Higher resolution
- Better construction
- More safety
Greetings,
Hartmut