You searched for: “pyranometer
solarimeter, pyranometer
1. General name for the class of actinometers that measure the combined intensity of incoming direct solar radiation and diffuse sky radiation.
2. An instrument used to measure the combined intensity of incident direct solar radiation and diffuse sky radiation.

It operates by comparing the heat produced by the radiation on blackened metal strips with that produced by a known electric current.

Word Entries at Get Words: “pyranometer
pyranometer
An instrument used for measuring global solar irradiance.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)