Kipp&Zonen CNR 4 Net Radiometers User Manual
Page 20
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Irradiance:
W/m²
0 to 2000
Definition
Measurement range
Non-stability
%
< 1
Definition
Maximum change of sensitivity per year, percentage of full scale
Spectral selectivity
%
< 3% (350 – 1500 nm spectral interval)
Definition
Deviation of the product of spectral absorption and spectral
transmittance from the corresponding mean within the indicated
spectral range
Uncertainty in daily total
%
< 5 (95 % confidence level)
Definition
Achievable uncertainty
International standards
WMO
ISO
Good quality
First Class
Instrument calibration
Indoors, side by side against reference CMP 3 pyranometer
according to ISO 9847:1992 annex A.3.1