calibration of Energy meters

[krishna_prgmatic]

Hi all,

I am developing an 3 phase energy meter using ADE7754.To calibarate the energy I found I have to get referenece meter and a constant source which I found very costly. Any alternate solution for calibrating the meter?

 

[spuffock]

Heat up some water! You know how much water there is, it takes a calorie to heat a gram a degree, you measure the temperature before and after, you know how much energy it took.
Just like you find out if the magnetron in your oven is still happy.

 

[Oznog]

Can't you just put in a sine wave, compare with a known good meter and adjust it for each phase, then do the same for a known current?

 

[Hero999]

He means a watt meter.