State-of-the-Art Measurements for PV - Energetics Meetings and ...
State-of-the-Art Measurements for PV - Energetics Meetings and ...
State-of-the-Art Measurements for PV - Energetics Meetings and ...
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Total irradiance - Traceability to SI units• In 2009 our ISO 17025 auditors from A2LA foundthat <strong>the</strong> cavity calibration is not traceable to SI !• If NIST calibrated it this would not be an issue.• The cavity U 95 uncertainty should be less than0.1% to not be a significant error source in primarycalibrations• An indoor calibration procedure validated byintercomparison with <strong>the</strong> WRR at < 0.1% U 95uncertainty would be desirable.National Renewable Energy Laboratory Innovation <strong>for</strong> Our Energy Future
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