User Manual
5
Typical signal output for
atmospheric application:
0 to 15 mV
Impedance:
20 to 200
Ω
, typically 50
Ω
Detector:
Copper-constantan multi junction
thermopile
Level accuracy:
1 degree
Irradiance:
0 to 2000 W/m
2
Spectral selectivity:
< 3% (330-1500 nm spectral interval)
Uncertainty in daily total:
< 5% (95% confidence level)
Instrument calibration:
Indoors. Side by side against reference
CMP3 pyranometer according to ISO
9847:1992 annex A.3.1
2.3 Pyrgeometer Specifications
Spectral range:
4.5
μ
m to 42
μ
m (50% points)
Sensitivity:
5 to 15
μ
V/W/m
2
Impedance:
20
Ω
to 200
Ω
(typically 50)
Response time:
< 18 seconds (95% response)
Non-linearity:
< 1% (-250 to +250 W/m
2
irradiance)
Temperature dependence of
sensitivity:
< 4% (-10° to +40°C)
Tilt error:
< 1% (deviation when tilted at any
angle off horizontal)
Zero offset due to temperature
change:
±4 W/m
2
(5K/hr temperature change)
Field of view
Upper
Lower
180 degrees
150 degrees
Net-irradiance:
-250 to +250 W/m
2
Non-stability:
< 1% (sensitivity change per year)
Window heating offset:
< 6 W/m
2
(1000 W/m
2
solar
irradiance)
Uncertainty in daily total:
< 10% (95% confidence level) indoor
calibration
Typical signal output for
atmospheric application:
±5 mV
Temperature sensors
Thermistor:
10k
Ω
Pt-100:
DIN class A
Instrument calibration:
Indoors, side by side against reference
CG(R) 3 pyrgeometer. On request
outdoors, side by side against
reference CG(R) 4 pyrgeometer
