Apogee SP-610-SS Benutzerhandbuch - Seite 6
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SPECIFICATIONS
Pyranometer (Shortwave Radiation) SP-510 and SP-610
Sensitivity (variable from sensor to
sensor, typical values listed)
Calibration Factor (Reciprocal of
Sensitivity)
Calibration Uncertainty
Output Range (Variable from sensor to
sensor)
Measurement Range
Measurement Repeatability
Long-term Drift (Non-stability)
Non-linearity
Detector Response Time
Field of View
Spectral Range (wavelengths where
response is 50% of maximum)
Directional (Cosine) Response
Temperature Response
Zero Offset A
Zero Offset B
Uncertainty in Daily Total
Calibration Traceability
Apogee Instruments SP-510 and SP-610 pyranometers are calibrated through side-by-side comparison to the mean
of four Apogee model SP-510 transfer standard pyranometers (shortwave radiation reference for upward-looking
pyranometer on net radiometer) or to the mean of four Apogee model SP-610 transfer standard pyranometers
(shortwave radiation reference for downward-looking pyranometer on net radiometer) under high intensity
discharge metal halide lamps. The transfer standard pyranometers are calibrated through side-by-side comparison
to the mean of at least two ISO-classified reference pyranometers under sunlight (clear sky conditions) in Logan,
Utah. Each of four ISO-classified reference pyranometers are recalibrated on an alternating year schedule (two
instruments each year) at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. NREL reference
standards are calibrated to the World Radiometric Reference (WRR).
SP-510-SS (Upward-looking)
-2
0.057 mV per W m
-2
17.5 W m
per mV
± 5 % (see Calibration Traceability below)
0 to 114 mV
0 to 2000 W m
Less than 2 % per year
180°
385 to 2105 nm
-2
Less than 30 W m
at 80° solar
zenith
Less than 5 % from -15 to 45 C
Less than 5 W m
Less than 5 W m
SP-610-SS (Downward-looking)
0.15 mV per W m
-2
6.7 W m
0 to 300 mV
-2
(shortwave irradiance)
Less than 1 %
Less than 1 %
0.5 seconds
150°
295 to 2685 nm
Less than 20% for angles between 0
and 60°
-2
; Less than 10 W m
-2
(heated)
-2
Less than 5 %
-2
per mV