Apogee Instruments SP-230 Посібник користувача - Сторінка 6
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SPECIFICATIONS
Power Supply: SP-230 integrated heaters: 12 VDC with a nominal current draw of 15 mA
Sensitivity: 0.20 mV per W m
Calibration Factor: 5.0 W m
Calibration Uncertainty: ± 5 % (see Calibration Traceability below)
Measurement Repeatability: < 1 %
Non-stability (Long-term Drift): < 2 % per year
Non-linearity: < 1 % (up to 1750 W m
Response Time: < 1 ms
Field of View: 180
o
Spectral Range: 360 nm to 1120 nm (wavelengths where response is 10 % of maximum; see Spectral
Response below)
Directional (Cosine) Response: ± 5 % at 75
Temperature Response: -0.04 ± 0.04 % per C (see Temperature Response below)
Operating Environment: -40 to 70 C
Dimensions: 2.40 cm diameter and 2.75 cm height
Mass: 90 g (with 5 m of lead wire)
Cable: 5 m of shielded, twisted-pair wire.
Additional cable available in multiples of 5 m
Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions)
Pigtail lead wires
Calibration Traceability:
Apogee Instruments SP series pyranometers are calibrated through side-by-side comparison to the mean
of four Apogee model SP-110 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
-2
-2
per mV (reciprocal of sensitivity)
-2
)
o
zenith angle (see Cosine Response below)
0 to 100 % relative humidity
Can be submerged in water up to depths of 30 m
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