Campbell Scientific NR01 Net Radiometer - Manual (Page 17)

NR01 Four-Component Net Radiation Sensor
3.3 IR01 Pyrgeometer Specifications
TABLE 3.3-1. Specifications of IR01
IR01 Specifications
Overall classification
according to ISO / WMO
Not applicable
Response time for 95 %
response 18 s
Window heating offset
(response to 1000 W/m
2 net
thermal radiation)
< 15 W/m 2
Zero offset b (response to 5
k/h change in ambient
temperature) <4 W/m 2
Non-Stability < 1% change per year
Non-Linearity < +/- 2.5%
Field of view 150 degrees
Spectral selectivity Not specified
Temperature response
(within an interval of 50
degrees C) Within 6% (-10 to +40 degrees C)
Tilt response Within +/- 2%
IR01 Additional Measurement Specifications
Sensitivity
5 – 15 μV/Wm -2
Expected voltage output Meteorological application: -5 to + 5 mV
Sensor resistance Between 100 and 400 Ohms
Power required Zero (passive sensor)
Range To 1000 Wm -2
Spectral range 4500 to 50000 nm (50% transmission points)
Required programming Φ = U / E (in case of net radiation only) Φ = (U /
E) + 5.67.10
-8 T 4 (absolute radiation), with T
from Pt100 measurement
Expected accuracy for daily
sums +/- 10%
Calibration
Calibration traceability International temperature standard
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