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Digital Output
An on-board 24-bit A to D converter processes the signals from the individual sensors and transmits the data via a digital SDI-12 output. Users can select to output net radiation, net longwave radiation, net shortwave radiation, and/ or each component sensor reading. The digital output eliminates the need for multiple analog datalogger channels to measure each of the four components of net radiation.

 

Four-component Net Radiometer
Four-component net radiometer consists of a blackbody pyranometer and pyrgeometer pair that face upward to provide incoming shortwave and longwave radiation measurements and a complementary pair that face downward to provide outgoing shortwave and longwave radiation measurements. Individual sensors measure the four separate components of net radiation for best accuracy.

 

Four-component Net Radiometer from Apogee Instruments

 

Heated Sensors
Each of the four sensors includes a 0.2 W heater that keeps water (liquid and frozen) off the sensors and minimizes errors caused when dew, frost, rain, or snow block the radiation path. Heaters can be turned off to save additional power when they are not needed through SDI-12 commands.

Compact and Light Weight
The small lightweight design radiometer facilitates easy mounting to a cross arm using the AM-500 mounting bracket. The bracket facilitates precision leveling.

 

Accurate and Affordable
Research-grade accuracy comparable to other four-component net radiometers, but at a lower cost.

Typical Applications
Net radiation is a key variable in the surface energy balance and influences turbulent fluxes, including evapotranspiration. Applications include measurements on flux towers and weather stations.

Warranty and Support
All Apogee products are backed by an industry-leading four year warranty and outstanding customer support.

 

 

Net Radiometer Introduction
   

Principles of Net Radiation
   

Lecture 5-Net Radiation

 

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  Technical Information
Technical Information
Find knowledge base articles, manuals, FAQs, technical support, and more.
 
+ Does the net radiometer give individual measurements from each pyranometer and pyrgeometer?
Yes, the sensor provides individual measurements of all four components of net radiation.
+ Can I order longer cable lengths?
Yes, please contact Apogee for custom cable lengths.
 

spec sheets
Specification Sheets

 

 

Photos

Apogee Net Radiometer being used in Alaska for avalanche forecasting, Sneittisham site. Photo credit: Alaska Electic Light & Power Apogee Net Radiometer being used in Alaska for avalanche forecasting Sneittisham site. Photo credit: Alaska Electic Light & Power Apogee Net Radiometer being used in Alaska for avalanche forecasting Sneittisham site. Photo credit: Alaska Electic Light & Power Apogee Net Radiometer being used in Alaska for avalanche forecasting Sneittisham site. Photo credit: Alaska Electic Light & Power Apogee Net Radiometer being used in Alaska for avalanche forecasting Sneittisham site. Photo credit: Alaska Electic Light & Power Apogee Net Radiometer at Mt. Roberts site in Alaska. Photo credit: Alaska Electic Light & Power  

 

Net Radiometers used by Alaska Electric Light & Power for avalanche forecasting. A live camera feed of the sensor mounted at Mt. Roberts shows the net radiometers ability to clear snow off the sensors through the low power heaters, the camera can be viewed here. Photo credit: Alaska Electric Light & Power

 

Models