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Apogee Instruments - Model MP-100-200 - SILICON-CELL PYRANOMETER METERS (MP-100-200)
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Apogee SP series pyranometers are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated under sunlight in Logan, UT traceable to the World Radiometric Reference (WRR) in Davos, Switzerland.