I am now the proud owner of a shiny new true RMS multi meter I've seen revues of it on YouTube and it gets very good reviews on all aspects of its accuracy and construction and of course safety not sure if I'm aloud to say which one it is maybe someone will tell me if its ok. Anyhow it reads the same as 2 of my other meters which are also true RMS although I didn't know they where. Any how I've found out that the 2 LED meters I bought that I posted about some time ago are both telling lies although one of them is occasionally telling the truth. It's interesting that the voltage is never still but is usually around 240 and also if I look at around 23:30 it drops off by 3 to 4 volts which must be when local economy 7 kicks in
What is more important is how the supplier declares the accuracy which is normally a % of full scale plus so many digits Kelly.
Effectively a meter on a scale reading say up to 999.9 volts will declare say, plus minus 0.3% (ie 3 volts) and plus minus 5 digits. So if you're connected to a true 240.0 V, it could read between 236.5 and 243.5 V and still be within specification................
What is more important is how the supplier declares the accuracy which is normally a % of full scale plus so many digits Kelly.
Effectively a meter on a scale reading say up to 999.9 volts will declare say, plus minus 0.3% (ie 3 volts) and plus minus 5 digits. So if you're connected to a true 240.0 V, it could read between 236.5 and 243.5 V and still be within specification................
