Apogee Instruments SP-522 Benutzerhandbuch - Seite 6
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SPECIFICATIONS
ISO 9060:2018
Input Voltage Requirement
Average Max Current Draw
Calibration Uncertainty at
-2
1000 W m
Measurement Repeatability
Long-term Drift
(Non-stability)
Non-linearity
Field of View
Spectral Range
Directional (Cosine)
Response
Temperature Response
Zero Offset A
Zero Offset B
Operating Environment
Dimensions
Mass (with 5 m of cable)
Cable
Calibration Traceability
Apogee Instruments SP-500 series pyranometers are calibrated through side-by-side comparison to the mean of
four transfer standard pyranometers (shortwave radiation reference) 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) in Davos, Switzerland.
Class C (previously known as second class)
Less than 3 % (see Calibration Traceability below)
385 to 2105 nm (wavelengths where response is 50 % of maximum)
Less than 30 W m⁻² at 80° solar zenith
Less than 5 W m⁻²; Less than 10 W m⁻² (heated)
-50 to 80 C; 0 to 100 % relative humidity; can be submerged in water up to 30 m
5 m of four conductor, shielded, twisted-pair wire; TPR jacket; pigtail lead wires; stainless
SP-522
5.5 to 24 V
4 mA (heater off)
30 mA (heater on)
Less than 1 %
Less than 2 % per year
Less than 1 % (up to 2000 W m
180°
Less than 5 % from -15 to 45 C
Less than 5 W m⁻²
30.5 diameter, 37 mm height
140 g
steel (316), M8 connector
-2
)