Kipp & Zonen CSD1, Instruction Manual

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colour signal outputs
red
blue
grey not sunny/sunny 0 V/1 V
both signals ground
direct radiation, 1 W/m
2
1 mV
colour power input
brown
yellow power supply + 12 VDC
power supply ground
colour heater inputs
white
black
green heater supply 10 W +12 VDC
both heaters common 0 V
heater supply 1 W +12 VDC
Figure 1.3.3 wiring schedule of CSD 1. Outputs: sunshine duration, direct
radiation, Inputs: heater low, heater high, power supply.
1.4 MEASUREMENT OF SUNSHINE DURATION
For measurement of sunshine duration, connect the power supply input and
the sunshine duration output. If the direct radiation level is higher than 120
W/m² by definition the time should be added to the sunshine duration. The
output voltage is 1 V. When the sun is not shining the output is 0V.
The usual procedure is to integrate the period with high output, and to store
either the 1 minute values or the totals for each day.