Kipp&Zonen BSRN Scientific Solar Monitoring System - Manual (Page 106)

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Spectral selectivity ± 2%
percentage deviation of the
product of spectral absorptance
and spectral transm ittance
from the corresponding m ean
within 0.35 :m and 1.5 :m
Tem perature response ± 1%
percentage deviation due to
change in am bient tem perature
within an interval of -20 to +50 °C,
relative to 20 °C.
Tilt response 0.25%
percentage deviation from the
responsivity at 00 tilt (horizontal)
due to change in tilt from 0° to 90°
at 1000 W m irradiance
-2
Viewing angle 2 B sr
Irradiance 0 - 1400 W m (m ax.4000 W m ) -2 -2
Spectral range 305-2800 nm (50% points)
335-2200 nm (95% points)
Sensitivity between 7 and 25 :V W m -1 2
Im pedance 40-100 Ohm
Receiver paint Carbon black
Glass dom es Schott K5 optical glass 2 m m thick, 30 m m and 50 m m outer
diam eter
Desiccant Silicagel
Spirit level Sensitivity 0.1° (bubble half out of the ring) Coincide with base
of the instrum ent. Detector surface and base are coplanar within
0.1°
Materials Anodized alum inium case Stainless steel screws in stainless
steel bushes. W hite plastic screen of ASA
Drying cartridge PMMA
W eight 830 g
Cable length 10 m
Dim ensions 91.5 m m total height, 150 m m diam eter, 25 m m dom e height,
50 m m dom e diam eter
B 2.4 Kipp and Zonen Delft BV PYRANOMETER CM 31 (additions/changes to CM 21)
Spectral Range 200-4000 nm (50% points)
290-3500 nm (95% points)
Spectral selectivity m ax. 2% in the spectral range 300 to 3000 nm
Zero off-set + 4 W m -2
response to 200 W m -2