Posted in | Pyranometers

SPN1 Solar Radiation Pyranometer

Delta-T Devices offers SPN1 Solar Radiation Pyranometer, a meteorological class solar radiation measurement device designed for prolonged outdoor exposure.

The pyranometer featuring an integrated heater is an economical and efficient replacement to shade-ring pyranometers, pyrheliometers and conventional sunshine recorders.

This product is user-friendly, does not require routine adjustment or polar alignment, and can operate at any latitude. The pyranometer dome is free from snow, ice, and dew even at temperatures down to -20 °C thanks to the built-in heater. This, in turn, ensures reliable readings even in challenging climatic conditions.

With a novel computer-generated shading pattern, the SPN1 Solar Radiation Pyranometer provides measurements of the direct and diffuse components of incident solar radiation using an array of seven miniature thermopile sensors. Moreover, it measures sunshine duration and calculates direct radiation by subtracting the diffuse components from the total radiation.

Key Features

The following are the key features of the SPN1 Solar Radiation Pyranometer:

  • Precision ground glass dome
  • DNI (Direct-Normal Irradiance) calculation
  • WMO sunshine threshold: 120 W m-2 direct beam
  • Global (total) and diffuse irradiance in W m-2
  • No motorized tracking, shade rings or moving parts
  • Operates at any latitude
  • No burnt paper tracks to interpret
  • No routine adjustment or polar alignment
  • Two analog outputs for diffuse and global radiation
  • One digital output for sunshine duration.


The following are the application areas of theSPN1 Solar Radiation Pyranometer:

  • Building energy management systems
  • Canopy analysis
  • ET and heat flux studies
  • Cloud cover research
  • Air pollution studies
  • Photovoltaic efficiency monitoring.

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