Pyranometers

A Pyranometer is a device that measures solar irradiance from a hemispherical field of view incident on a flat surface. The global irradiance includes direct sunlight and diffuse sunlight. Irradiance is the radiant flux received by a surface per unit area and is measured in watt per square metre (W/m²). 

Pyranometers are chiefly used for climatological research and weather monitoring purposes, however recent worldwide interest in solar energy has also lead to an increased interest in pyranometers.

In many cases the surface of interest is horizontal such that the hemispherical field of view corresponds to the sky dome. In such cases the measured quantity is the so-called global horizontal irradiance (GHI. In other cases the surface is tilted, for example in photovoltaic applications where the surface often corresponds to the plane of array (POA) of solar panels In this case the measured quantity is the global tilted irradiance (GTI). 

Product Line

MODEL 470

SR30-M2-D1 pyranometer

This is a Digital Class A pyranometer with heating and tilt sensor and offers the highest accuracy and highest data availability. It outperforms pyranometers equipped with traditional ventilation systems and is the ideal instrument for use in PV system performance monitoring and meteorological networks.

Features: 

  • Measurand: hemispherical solar radiation
  • ISO 9060:2018 classification: spectrally flat Class A pyranometer
  • ISO 9060:1990 classification: secondary standard pyranometer
  • IEC 61724-1:2021 compliance: meets Class A PV monitoring system requirements
  • Application: National Meteorological NetworksPV monitoring commercial and utility scale, meteorology / climatology, other
  • Heater: with RVH Recirculating Ventilation and Heating
  • Output: Modbus RS-485
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Model 567

SR05-LI19 pyranometer

SR05 is a solar radiation sensor that is applied in general observations. It measures the solar radiation received by a plane surface from a 180 degrees field of view angle

Features:

  • Measurand: hemispherical solar radiation
  • ISO classification: ISO 9060:2018 spectrally flat Class C pyranometer
  • ISO 9060:1990:  second class pyranometer
  • WMO performance level: moderate quality  pyranometer
  • Calibration uncertainty: < 2.4 % (k = 2)
  • Calibration traceability: to WRR
  • Spectral range: 285 to 3000 x 10-9 m
  • Sensitivity (nominal): 10 x 10-6 V/(W/m2) 
  • Rated operating temperature:  -40 to +80 degrees celsius range
  • Temperature response: < ± 3 % (-10 to +40 °C)
  • Standard cable length: 3 m
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