Apogee Instruments SP-212 Manual do Proprietário - Página 13
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Sensor Calibration
Serial Number Range 0-10516. Apogee amplified pyranometer models have a standard calibration factor of
exactly:
Multiply this calibration factor by the measured mV signal to convert sensor output to total shortwave radiation in
-2
units of W m
:
Calibration Factor (0.5 W m
0.5
Serial Numbers 10517 and above. Apogee amplified pyranometer models have a standard calibration factor of
exactly:
Multiply this calibration factor by the measured mV signal to convert sensor output to total shortwave radiation in
-2
units of W m
:
Calibration Factor (0.8 W m
0.8
Full Sunlight
(1000 W m
-2
)
SP-212: 0.5 W m
SP-215: 0.25 W m
-2
per mV) * Sensor Output Signal (mV) = Shortwave Radiation (W m
*
2000
SP-212: 0.8 W m
SP-215: 0.4 W m
-2
per mV) * Sensor Output Signal (mV) = Shortwave Radiation (W m
*
1250
Sensor Output
2000 mV
-2
per mV
-2
per mV
=
1000
-2
per mV
-2
per mV
=
1000
Serial Number Range 0-10516. Example of total shortwave
radiation measurement with an Apogee SP-212
pyranometer. Full sunlight yields total shortwave radiation
on a horizontal plane at the Earth's surface of
approximately 1000 W m
2000 mV. The signal is converted to shortwave radiation by
multiplying by the calibration factor of 0.5 W m
Serial Numbers 10517 and above. Example of total
shortwave radiation measurement with an Apogee SP-212
pyranometer. Full sunlight yields total shortwave radiation
on a horizontal plane at the Earth's surface of
approximately 1000 W m
of 1250 mV. The signal is converted to shortwave radiation
by multiplying by the calibration factor of 0.8 W m
mV.
-2
)
-2
)
-2
-1
s
. This yields an output signal of
-2
per mV.
-2
-1
s
. This yields an output signal
-2
per