Silicon-cell Photodiode Pyranometers
Pyranometer sensors measure
the shortwave radiation reaching
the Earth's surface, measured in Joules m-2 s-1 or Watts m-2.
LONG-TERM TEST RESULTS
The Utah State University Crop Physiology Lab has conducted a long-term outdoor pyranometer study for the past 10 years.
Their results are available below and show that the Apogee pyranometers compare well to other silicon-cell photodiode and thermopile pyranometers. Each model is compared to a heated and ventilated Kipp and Zonen CM21 thermopile pyranometer.
$169
Model SP-110:
Products >> Silicon-cell Photodiode Pyranometers >> Technical information >> Long-term Test Results