Kipp & Zonen CSD1, Instruction Manual

Page: 19 / 41

19
2.
PROPERTIES OF CSD 1
Measurement accuracy was determined by experimental comparison with
reference instruments that are traceable to WRR (Word Radiometer
Reference) standards.
Operating temperature of CSD1
-30
°
C (10 W heating on)
to +70
°
C (no heating)
Location any longitude and latitude
Required power supply
without heating < 0.1 W at 12 VDC
heating low level 1 W ± 0.1 W at 12 VDC
heating high level 10 W ± 1 W at 12 VDC
2.1 SPECIFICATIONS OF THE SUNSHINE DURATION
MEASUREMENT
Estimated accuracy of the sunshine duration measurement
sunny > 120 ± 40 W/m² 1 ± 0.1 V
not sunny < 120 ± 40 W/m² 0 ± 0.1 V
2.2 SPECIFICATIONS OF THE DIRECT RADIATION
MEASUREMENT
Estimated accuracy of the direct radiation measurement
output level 1 mV/W/m² ± 33% at 120 W/m²
expected output range 0-1000 mV