Current sensor: accuracy vs error

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You might want to redefine your requirements in terms of all inputs and overall accuracy needed in that range including environmental inputs and budget etc.

It might open up better possible solutions.
 

Thanks for your support, but I already bought those LEM sensors and now I just need to calibrate the ADC readings.

I've followed @FvM suggestion and now the readings seems pretty accurate. Anyway, I'll try to design an accurate 5A current source then I'll check various readings using more turns (1,5,10,20) for the primary wire, attempting to read 5, 25, 50 and 100A.
 

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