Feeling pretty gutted today, my brand new Apogee MQ-610 is faulty apparently. Low light applications affected by zero-offset calibration error in some meters
On December 9, 2021, an internal Quality Control Audit determined a small number of Apogee handheld pyranometer, PAR, and ePAR meters may have shipped with a zero-value offset that was outside of our published specifications. This means some meters may not be reading within the ± 5% advertised specification when measuring low light levels. Please refer to the table and search tool below to determine if your meter is in the affected group and if you are measuring low enough light levels to be concerned.
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