- Mesure l’irradiance globale (totale) et diffuse en W/m²
Seuil d’ensoleillement OMM : 120 W/m² en faisceau direct
Aucun réglage de routine ni alignement polaire
Sans pièces mobiles, anneaux d’ombrage ni suivi motorisé
Fonctionne sous toutes les latitudes
Dôme en verre dépoli unique
Capteurs thermopiles large bande
Réponse spectrale et cosinus quasi idéale
Sensibilité de sortie standard
Égale ou supérieure à la norme ISO Classe B et à la norme de bonne qualité OMM pour un pyranomètre solaire, à tous égards, à l’exception de la réponse spectrale, dont la précision est de ±10 % sur 0,4 à 2,7 µm
| Characteristic | Description / Value |
|---|---|
| Spectral range | 0 to > 2000 W/m² |
| Resolution | 0.6 W/m² = 0.6mV |
| Analog output sensitivity | 1mV = 1 W/m² |
| Analog output range | 0 … 2500 mV |
| Sunshine status threshold | 120 W/m² |
| Sunshine status output | No sun = open circuit Sun = short circuit to ground |
| Accuracy: sunshine status | ± 10% sun hours with respect to the threshold |
| Accuracy: cosine correction | ± 2% of incoming radiation over 0 … 90° zenith angle |
| Accuracy: azimuth angle | ± 5% over 360° rotation |
| Quality Standard | SPN1 matches or exceeds ISO First Class standard and WMO Good Quality standard for solar pyranometers in all respects apart from spectral response – which is accurate to ±10% over 0.4 to 2.7 μm |
| Overall Acuracy | ± 5% daily integrals |
| Global (Total) | ± 5% ± 10 W/m2 hourly averages |
| Diffuse Radiation | ± 8% ± 10 W/m² individual readings Accuracy figures give 95% confidence limits, i.e. 95% of individual readings will be within stated limits under normal climactic conditions. |
| Power requirements | 2 mA (excluding heating power) 5 … 15 VDC |
| Heating power | 12 … 15 VDC, up to 1.5 A |
| Heating control | Continuously variable up to 20 W output for external temperatures below 0°C |
| Lowest snow & ice-free temperatures (with heating in use) | -20°C at 0 m/s wind speed -10°C at 2 m/s wind speed |
| Temp coefficient | ± 0.02% per °C typical (-20 … +70°C) |
| Temperature range | -40 … +70°C |
| Recalibration / stability | Factory calibration recommended every 2 years |
| Spectral response | 400 … 2700 nm |
| Spectral sensitivity variation | 10% typical |
| Latitude capability | -90 … +90°C |
| Connection | 8-pole plug (M12) |
| Cable | 8-wire cable, length: 5 m |
| Environmental | IP67 sealing |
| Mounting options | 3 x M5 tapped holes in base; 108 mm pcd, 120° spacing |
| Size / weight | 140 mm (diameter) x 100 mm (height), 940g |
| Manufacturer | Delta-T Devices Ltd. |
