APOGEE

Silicon-cell Photodiode Pyranometers
Conversion factors


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
 
 
CONVERSION FACTORS

The sensor uses a silicon cell to yield a millivolt output. This output is multiplied by a conversion factor to yield W m-2.

Amplified sensors use smaller conversion factors to match their increased mV outputs. For 5 V models, the conversions factor is 0.25; for 2.5 V models the conversion factor is 0.5.

 

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    CONVERSION FACTORS
      WIRING THE SENSOR
      MOUNTING THE SENSOR