Dear Sir/Madam
We have designed a Single Phase Multifunction Meter using device MSP430F6731. We have 3 ranges for Current measurement i.e. 20AAC, 5AAC, & 1A AC.
In 1A AC range we want to measure Wattage from 2 watts.
At present we can measure from 3 Watts, but we observed around 4%. Our customer is asking the error ±1.0% of Full Scale.
Kindly look into and guide to resolve the problem.
1 ) Schematic is attached for your reference.
2 ) Also the results is attached
3 ) Details as per catalogue enclosed
So that you can study & guide us further.
Regards
Pradhan
PG09 SCHEMATIC.pdfPG09 Specification-ilovepdf-compressed (1).pdfPG-09_1Test Report.pdfPG-09_2Test Report.pdfPG-09_3Test Report .pdf