The Solar Radiation Sensor, or solar pyranometer, measures global radiation, the sum at the point of measurement of both the direct and diffuse components of solar irradiance. The sensor’s transducer, which converts incident radiation to electrical current, is a silicon photodiode with wide spectral response. From the sensor’s output voltage, the console calculates and displays solar irradiance. It also integrates the irradiance values and displays total incident energy over a set period of time.
Pyranometer is to be located far from any kind of obstruction, which might reflect sunlight (or sun shadow) onto the pyranometer itself.
The sunlight sensor must be installed at the same azimuth and tilt angle than the PV array.
|Operating Temperature :||-40° to +65° C||Storage Temperature :||-45° to +70°C|
|Transducer :||Silicon photodiode||Spectral Response :||400 to 1100 nanometers Cosine Response|
|Percent of Reading :||±3% (0° to ±70° ), ±10% (±70° to ±85° )||Percent of Full Scale :||±2% (0° to ±90°)|
|Temperature Coefficient :||+ 0.12% per °C||Reference temperature :||25°C|
|Housing Material :||UV-resistant PVC plastic||Weight :||250 g|
|Range :||0 to 1800 W/m2||Accuracy :||±5% of full scale|
|Drift :||up to ±2% per year||Output :||0 to 5 VDC (0- 1800 w/m2)|
|Power supply :||7- 24 VDC 1mA (typical)|
|Using the bubble level on the sensor as a guide, adjust the sensor until it is level by tightening or loosening the screws. The top of the Solar Radiation sensor should be even with or slightly above the rim of the rain cone. The entire comb structure of the UV Radiation sensor should be above the rim of the rain cone.|
|Final leveling of the sensor(s) should be done with the ISS mounted in its operating location.|
|Ensure that the cables are free of crimps. Secure them to the support tubes with the provided cable ties so that they will not fray in the wind.|
|Shade the sensor and make sure the reading changes.|