| ISO Classification | First Class |
| Response time (95%) | <18s |
| Zero offsets
thermal radiation
(200 W/m²) | <12 W/m² |
| Zero offsets
Temperature change (5 K/hr) | <4 W/m² |
| Non-stability (change/year) | <1% |
| Non-linearity
(0 to 1000 W/m²) | <1% |
| Directional error
(at 80° with 1000 W/m²) | <20 W/m² |
| Temperature dependence of sensitivity | <4% (-10 to +40°C) |
| Tilt error
(at 1000 W/m²) | <1% |
| Sensitivity | 5 to 20 µV/W/m² |
| Impedence | 20 to 200 Ohm |
| Level accuracy | 0.5° |
| Operating temperature | -40 to +80°C |
| Spectral range
(50% points) | 310 to 2800nm |
| Typical signal output for atmospheric applications | 0 to 15mV |
| Maximum irradiance | 2000 W/m² |
| Expected daily uncertainty | ±5% |
| Standard cable length | 10m |
