Geonica SA

- Model GEO-LP02 - Second Class Pyranometer

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GEO-LP02 is a solar radiation sensor that is applied in most common solar radiation observations. It complies with the Second Class specifications of the ISO 9060 standard and the WMO Guide. GEO-LP02 pyranometer is widely used in (agro-) meteorological applications and for PV system performance monitoring.

GEO-LP02 is a solar radiation sensor that is applied in general observations. It measures the solar radiation received by a plane surface from a 180° field of view angle. This quantity, expressed in W/m2, is called 'hemispherical' solar radiation. GEO-LP02 pyranometer can be employed outdoors under the sun, as well as indoors with lamp-based solar simulators. Its orientation depends on the application and may be horizontal, tilted (for plane of array radiation) or inverted (for reflected radition). GEO-LP02 pyranometer is a very good alternative to silicon cell (photodiode-based) pyranometers, which do not comply ISO 9060 standard.

OPERATION
The irradiance in W/m2 is calculated by dividing the GEO-LP02 output, a small voltage, by the sensitivity. This sensitivity is provided with GEO-LP02 on its calibration certificate.

USE AS A SUNSHINE DURATION SENSOR
GEO-LP02 may be used, in combination with appropriate software, to estimate sunshine duration. This is much more cost-effective than using a dedicated sunshine duration sensor. Ask for our application note.

  • ISO classification : Second class
  • WMO performance level (WMO-No.8, 7th edition) : Moderate quality
  • Response time (95%) Response time (63%) : <18s <6s
  • Zero offset a (response to 200 W/m2 net thermal radiation) : < ± 15 W/m2 unventilated
  • Zero offset b (response to 5 °C/h change in ambient : temperature) : <±4W/m2
  • Resolution : 10 W/m2
  • Non-stability : < ± 1 % change per year
  • Non-lineartity : <±1% (100 to 1000 W/m2)
  • Directional response : <±25W/m2
  • Spectral selectivity : <±5%(0.35to1.5um)
  • Temperature response : <±3%(-10to+40°C)
  • Tilt response : < ± 2 % (0 to 90° at 1000 W/m2)
  • Spectral range (50% points) : 300 to 2800 nm
  • Spectral range (20% points) : 285 to 3000 nm
  • Measuring range : 0 to 2000 W/m2
  • Sensitivity range : 7to25uV/(W/m2)
  • Sensitivity (nominal) : 15uV/(W/m2)
  • Calibration traceability : toWRR
  • Calibration uncertainty : <1.8%(k = 2)
  • Sensor resistance range : 40to60Q
  • Field of view : 180°
  • Levelling : bubble level and adjustable levelling feet are included
  • IP protection class : IP 67

  • Additional cable length in multiples of 5 m (add to the standard 5m)

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