Questionable calibration of pyranometer 128762 (DHI) #63
Description
The Kipp & Zonen CMP11 pyranometer 128762 has been used for measuring DHI since June 2018.
The pyranometer has the following calibrations:
- 8.59 - November 2012 (factory original)
- 8.76 - June 2018 (unknown source)
- 8.58 - January 2021 (factory calibration)
Give how close the two factory calibrations are, this makes me question the legitimacy of the June 2018 calibration, which was probably done at DTU.
- Investigate the source of the June 2018 calibration (start by checking DTU's records).