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Meter accuracy

I recently purchased 2 little voltmeters they look like the sort that would go in a control or instrument panel they are connected with just 2 wires which provide the operating supply ( they light up green and red) however the green  one states it will work between 20and 500 volts and the red one between 60 and 480 volts. When they are both on the green one indicates normally around 241 volts the red one shows 235 volts why the discrepancy I know it's not much but makes you wonder if one of them is lying. Secondly I've noticed that the green one tracks voltage changes faster than the red one and that a few times the green one jumps down to 238 then up to 241 multiple times while the red one stays the same and I think can see a slight flicker in my filament lamps when this is happening incidentally both meters are connected to the same plug  a 2 pin 5 amp one
Parents
  • And when that dual carriageway is the one from the end of the M50 above Ross on Wye to Coldra on the M4 At Newport or out across the Heads of the Valleys into Wales the ten miles an hour speed difference allows the faster vehicle driver to stop for a short break and still get there at the same time, but refreshed.


    Andy B
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  • And when that dual carriageway is the one from the end of the M50 above Ross on Wye to Coldra on the M4 At Newport or out across the Heads of the Valleys into Wales the ten miles an hour speed difference allows the faster vehicle driver to stop for a short break and still get there at the same time, but refreshed.


    Andy B
Children
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