Solar Radiation Sensor

Product number:6450
Measures solar radiation for evapotranspiration (ET) and Temperature/Humidity/Sun/Wind (THSW) Index.

Precision pyranometer

Detects solar radiation  at wavelengths of 300 to 1100 nanometers. Solar radiation data is required (along with an anemometer and a temperature/humidity sensor) enables the weather station to report ET and THSW Index.

Stands up to the weather

  • Two-piece housing minimizes radiation heating, allows convection cooling of the sensor, and prevents the trapping of water or dust.

Designed for accuracy

  • Diffuser element and housing are carefully designed for accurate cosine response.
  • Silicon photo diode provides good match to solar spectrum.


  • Accuracy: +/-5% of full spectrum
  • Cosine Response: =/-3% for angle of incidence from o – 75 degrees
  • Temperature Coefficient: -0.067% per degree F (-0.12% per degree C)


  • Solar radiation sensor with built-in level
  • 2 ft (0.6 m) cable


  • A  Vantage Pro2 sensor suite (note: Vantage Pro2 Plus and GroWeather already include this product) OR
  • A Sensor Transmitter  OR
  • An EnviroMonitor Node


  • A Sensor Mounting Shelf (#6673) for mounting to a Vantage Pro2 sensor suite.
  • A Universal Mounting Bracket (#7714) for mounting with a Sensor Transmitter or an EnviroMonitor Node.