NR01-L 4-Component Net Radiometer
NR01-L 4-Component Net Radiometer

The NR01 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 NR01 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 CR6 and CR3000 dataloggers can directly measure this radiometer. A CR1000 can also be used, but a 4WPB100 module is required to measure the internal RTD.

Benefits and Features

  • Internal RTD provides temperature compensation of measurements
  • Research-grade performance
  • Internal 1-W heater reduces the 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

The NR01, manufactured by Hukseflux and cabled for use with Campbell Scientific data loggers, is a research-grade net radiometer that measures the energy balance between incoming short-wave and long-wave infrared radiation versus surface-reflected short-wave and outgoing long-wave infrared radiation. Our data loggers measure the NR01's output and control its internal heater. This net radiometer offers a professional solution for scientific-grade energy balance studies.

  • Measures net radiation
  • NR01-L 4-Component Net Radiometer ideal for research-grade solar radiation measurements
  • Consists of two pyranometers to measure short-wave radiation and two pyrgeometers to measure infrared radiation
  • Includes RTD to measure internal temperature
Sensor Hukseflux’s SR01 ISO-class, thermopile pyranometers, IR01 pyrgeometers, PT100 RTD
Measurement Description Measures incoming and outgoing short-wave and long-wave radiation
Response Time 18 s
Sensitivity 10 to 40 μV W-1 m2
Expected Output Range -0.1 to +50 mV
Expected Accuracy for Daily Totals ±10%
Heater 90 ohm, 1.6 W (at 12 Vdc)
Operating Temperature Range -40° to +80°C
Heater Current Drain ~140 mA
Dimensions 26.3 x 11.3 x 12.1 cm (10.4 x 4.4 x 4.8 in.)
  • 1.3 kg (2.9 lb) with 5 m (16.4 ft) cable
  • 0.9 kg (2 lb) sensor only


Spectral Range 305 to 2800 nm


Spectral Range 4500 to 50,000 nm


Enter the terms you wish to search for.