APOGEE

Silicon-cell Photodiode Pyranometers
Long-term test results

The Pyranometer Sensor is
calibrated to measure the
shortwave radiation reaching
the Earth's surface, measured in Joules m-2 s-1 or Watts m-2.
 

     Model SP-110:

$169
     Model AL-100: $29
 
  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.

          SILICON-CELL PHOTDIODE
                PYRANOMETERS
 
          THERMOPILE PYRANOMETERS
      SPEC SHEETS
      PROGRAMS & MANUALS
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     COSINE RESPONSE
      RECALIBRATION
      SPECTRAL RESPONSE
      TEMPERATURE RESPONSE
      LONG-TERM TESTING
      MORE INFO