CMP3-L Pyranometer with Sun Shield

The CMP3-L measures solar radiation with a high-quality blackened thermopile protected by a dome. The blackened thermopile provides a flat spectral response for the full solar spectrum range, which allows the CMP3-L to be used under plant canopies or lamps, when the sky is cloudy, and for reflected radiation measurements. 

The CMP3-L includes a white snap-on sun shield that reduces the sensor’s temperature. It also has a bubble level and adjusting leveling screws, which enable the sensor to be leveled without using a leveling base. 

The CMP3-L produces a millivolt signal that is measured directly by a Campbell Scientific data logger. 

Two CMP3-L pyranometers can be mounted back-to-back to make a low-cost albedometer. Contact Campbell Scientific for more information. 

Benefits and Features 

• • Includes a white snap-on sun shield that reduces the sensor’s temperature 
  • Measures reflected solar radiation when inverted 
  • Provides measurements in direct sunlight, under plant canopies, when the sky is cloudy, and in artificial light 
  • Includes bubble level and leveling screws, eliminating the need for a separate leveling base and simplifying installation 
  • Acceptable for providing the solar radiation data used in stability estimations 
  • Dome protects thermopile and allows water to roll off of it 
  • Designed for continuous indoor and outdoor use