Kipp & Zonen CSD1, Instruction Manual

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1.2 THE MINIMUM NECESSARY REQUIREMENTS
For working with CSD 1 at least 1 channel of data acquisition is needed.
Usually the measurement values are stored and integrated during each day.
After a day of measurement, the daily total is usually stored and reset to 0.
The output of the sunshine duration signal is 0 Volt when it is not sunny, or 1
Volt if the direct solar radiation exceeds the level of 120 W/m².
Secondly one needs a suitable place for installation. The most suitable
location is a where the sun is visible during the full day. An open horizon is
best. In any case, during the day there should always be exposure to the
direct radiation.
The sensor needs power from a source that can provide 9-15 VDC at a
power of 10 mW (without heating on). This can easily be supplied by a small
solar panel or a battery.
When using the measurement of the direct radiation, an additional voltage
channel of data acquisition is required.
The expected output range is 0-1000 mV.
When using the heaters, additional power must be supplied. There are two
power levels available at 12 VDC, 1 Watt and 10 Watts.
1.3 INSTALLATION
For proper installation one must know the latitude of the location and have a
map or compass available to determine the North-South axis.
When using a mast, the CSD 1 must be mounted south of the mast in the
northern hemisphere, north of the mast in the southern hemisphere, to avoid
the shadow of the mast falling on the instrument.
As seen from above, the instrument “axis" must be North-South.