Description
CNR4 Net Radiometer
The CNR4 net radiometer consists of two first-class pyranometers, one facing upward, the other facing downward, and two pyrgeometers positioned similarly.
The pyranometers measure short-wave radiation. The pyrgeometer pair measures long-wave radiation.
The upper long-wave detector of CNR4 has a meniscus dome to ensure water droplets role off easily. The dome also improves the field of view to nearly 180°.
All 4 sensors are integrated directly into the instrument body in a neat compact design.
For optimal accuracy the individual sensors are calibrated individually.
CNR4 Specifications
| Spectral range (50% points) | 0.3 to 2.8 µm = 300 to 2800 (short wave) nm |
| Spectral range (50% points) | 4.5 to 42 µm = 4500 to 42000 (long wave) nm |
| Sensitivity | 5 to 20 µV/W/m² |
| Temperature dependence of sensitivity (-10 ºC to +40 ºC) | < 4 % |
| Response time | < 18 s |
| Non-linearity | < 1 % |
| Operating temperature | -40 to 80 °C |
| Ventilation power | (of the optional CNF4 ventilation unit) 10 W |
