Wilbert, Stefan and Janotte, Nicole and Pitz-Paal , Robert and van Wely, Leo and Geuder, Norbert (2010) Reduced uncertainties of field pyrheliometers through improved sensor calibration. Solar Paces 2010, Perpignan.
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A decisive influence on the overall uncertainty of common field pyrheliometers is caused by their laboratory calibration using artificial light sources and instruments of the same kind as references. Alternative outdoor calibrations allow the use of an absolute cavity radiometer as a more accurate reference. As the sun is used as light source for these calibrations actual sky conditions can influence the outdoor calibration and have to be monitored. If test and reference instruments have different angular acceptance functions circumsolar radiation can have a crucial effect on the calibration accuracy. With outdoor calibrations carried out by DLR the calibration uncertainty of K&Z pyrheliometers could be reduced from 0.9% to approximately 0.4%.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Reduced uncertainties of field pyrheliometers through improved sensor calibration|
|Keywords:||solar irradiance, pyrheliometer, absolute cavity radiometer, circumsolar radiation, sunshape, calibration|
|Event Title:||Solar Paces 2010|
|Event Type:||international Conference|
|HGF - Research field:||Energy|
|HGF - Program:||Renewable Energies|
|HGF - Program Themes:||E SF - Solar research (old)|
|DLR - Research area:||Energy|
|DLR - Program:||E SF - Solar research|
|DLR - Research theme (Project):||E - Qualifizierung (old)|
|Institutes and Institutions:||Institute of Technical Thermodynamics > Solar Research|
|Deposited By:||Stefan Wilbert|
|Deposited On:||21 Jan 2011 15:30|
|Last Modified:||21 Jan 2011 15:30|
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