Benefits and Features
Internal RTD provides temperature compensation of measurements
Research-grade performance
Internal 1-W heater reduces formation of dew and melts frost
Separate outputs of short-wave and long-wave infrared radiation for better accuracy and more thorough quality assurance
Robust—only requiring limited maintenance

Technical Description
The NRO1 consists of a pyranometer and pyrgeometer pair that faces upward and a complementary pair that faces downward. The pyranometers and pyrgeometers measure short-wave and far infrared radiation, respectively.
The NRO1 includes an on-board RTD to measure the radiometer's internal temperature and a 1-W heater that minimizes the formation of dew and melts frost. To reduce current drain, a relay is typically used to turn on the heater only when the solar radiation is less than 20 W/m².
Campbell Scientific's CR3000 and CR5000 dataloggers are ideal for measuring this radiometer. A CR1000 can also be used, but a 4WPB100 module is required to measure the internal RTD.