Robust 4-way radiometer that requires little maintenance
Overview
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 MoreBenefits 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
Images
Detailed Description
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.
Specifications
| 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.) |
| Weight |
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Pyranometer |
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| Spectral Range | 305 to 2800 nm |
Pyrgeometer |
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| Spectral Range | 4500 to 50,000 nm |
Compatibility
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Dataloggers
| Product | Compatible | Note |
|---|---|---|
| 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. | |
| CR3000 (retired) | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Mounting Equipment
| Product | Compatible | Note |
|---|---|---|
| 26120 |
Additional Compatibility Information
Mounting
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.