Hukseflux SR05 series - 3 Specifications of SR05-D1 A3-PV; 3.1 Specifications of SR05-D1 A3-PV

SR05-D1A3-PV manual v1801 18/83
3 Specifications of SR05-D1A3-PV
3.1 Specifications of SR05-D1A3-PV
SR05 pyranometers measure the solar radiation received by a plane surface from a 180 °
field of view angle. This quantity, expressed in W/m
2
, is called “hemispherical” solar
radiation.
SR05-D1A3-PV offers irradiance in W/m
2
as a digital output and as a 0-1 V output. It
must be used in combination with suitable power supply and a data acquisition system
which uses the Modbus communication protocol over RS-485 or one that is capable of
handling a 0-1 V signal.
This user manual covers use of SR05-D1A3-PV. Specifications of this version
differ from those of the other digital and analogue sensors in the SR05 series
range. For use of SR05-D1A3 or SR05-D2A2, consult the separate SR05-D1A3 &
SR05-D2A2 user manual. For use of SR05-A1, offering analogue millivolt output,
consult the separate SR05-A1 user manual.
The instrument is classified according to ISO 9060 and should be used in accordance with
the recommended practices of ISO, IEC, WMO and ASTM.
Table 3.1.1 Specifications of SR05-D1A3-PV (continued on next pages)
SR05-D1A3-PV MEASUREMENT SPECIFICATIONS:
LIST OF CLASSIFICATION CRITERIA OF ISO 9060*
ISO classification (ISO 9060: 1990)
second class pyranometer
WMO performance level (WMO-No. 8,
seventh edition 2008)
moderate quality pyranometer
Response time (95 %)
18 s
Zero offset a (response to 200 W/m
2
net thermal radiation)
< 15 W/m
2
unventilated
Zero offset b (response to 5 K/h
change in ambient temperature)
< ± 4 W/m
2
Non-stability
< ± 1 % change per year
Non-linearity
< ± 1 % (100 to 1000 W/m
2
)
Directional response
< ± 25 W/m
2
Spectral selectivity
< ± 5 % (0.35 to 1.5 x 10
-6
m)
Temperature response
< ± 3 % (-10 to +40 °C)
Tilt response
< ± 2 % (0 to 90 ° at 1000 W/m
2
)
*For the exact definition of pyranometer ISO 9060 specifications see the appendix.