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HELIOGRAPH
Automatic measurement of sunshine duration
INRA-CEA patent pending.
Sensor according to the World Meteorological Organisation
recommandations
Authenticated by Météo France
- Reference : A01 33 5A 000 0
Rotation speed : 100 revolutions / hour
Output signal : Photodarlington open collector level
VSat. at 1mA : 0.7 V
Maximal load : 1mA
Maximal voltage : 15V
Saturation duration : 0.1 to 3s according to the radiation
Standard power supply : 24V - 50 Hz
Optional power supply : 4 à 16V cc
Consumption : 2mA
Catalog reference CE 181
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Principle
The end of an optical fiber resolves around the sun axis.
The opening angle is limited by an optical diaphragm. At the other
end, a photovoltaïc detector receives the light pulse when
the fiber window meets the sun. The detected signal is compared
to a threshold. A pulse is generated when the radiation intensity
exceeds 120 W/m².
Presentation
Sensor fixed on ajustable and graduated support. An anticondensation
heating device is located under the sensor. Power supply : 24V
- 30W.
Usage
It can be used with the CE-264 counter or any CIMEL automatic
weather stations.
