The NR01, manufactured by Hukseflux, 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 dataloggers measure the NR01's output and control its internal heater. This net radiometer offers a professional solution for scientific-grade energy balance studies.
Note: NR01 radiometers with a serial number less than 2313 used the pn 21271 fitting. NR01 radiometers with a serial number greater than 2312 do not need the pn 21271 fitting.Read More
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 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.
|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.)|
|Spectral Range||305 to 2800 nm|
|Spectral Range||4500 to 50,000 nm|
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
|21X (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR10 (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR1000 (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR1000X||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR10X (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR23X (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR9000 (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
|CR9000X (retired)||A 4WPB100 PRT Bridge Module is required to measure the internal RTD.|
To avoid shading or reflections and to promote spatial averaging, the NR01 should be mounted at least 1.5 m above the ground or crop canopy and away from all obstructions or reflective surfaces that might adversely affect the measurement. Campbell Scientific recommends mounting the NR01 to a CM300-series mounting pole at least 25 feet away from other mounting structures. The NR01 is attached to the CM300-series mounting pole via a CM204 or CM206 crossarm.