The DPA822 UV-B radiometer measures atmospheric irradiance in the 280–315 nm spectral range. Using a precision photodiode with an interference optical filter, it ensures accurate readings under various sunlight and atmospheric conditions. With IP66 anodized aluminum housing, 4–20 mA output, and 10–30 V AC/DC supply, it is designed for long-term meteorological and environmental monitoring.
The DPA822 UV-B radiometer is engineered for precise measurement of atmospheric irradiance in the 280–315 nm spectral band. It features a high-sensitivity photodiode with thin-film interference filtering for enhanced spectral accuracy and stability. Calibrated under real sunlight, it offers optimal performance in natural atmospheric conditions, with ISO17025 traceability. A durable dome and diffuser ensure excellent cosine response, delivering dependable readings even at low sun angles.
Application
Designed for meteorological stations, climate research, and environmental monitoring programs, the DPA822 is ideal for assessing UV-B radiation levels for scientific studies, ozone monitoring, and public health safety. Its robust anodized aluminum housing and IP66 protection rating guarantee long-lasting performance in outdoor environments.
Advantages
- Specialized UV-B measurement in the 280–315 nm range
- High-accuracy cosine response
- Calibration under natural sunlight
- ISO17025 traceable performance
- Rugged, weatherproof anodized aluminum housing (IP66)
Application Measures
- Mount on Ø 45–65 mm pole using DYA034 arm and DYA049 collar
- Use with compatible data loggers (E-Log, Alpha-Log)
- Provide 10–30 V AC/DC power supply
- Recalibrate every two years for best accuracy
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement type | UV-B atmospheric irradiance |
| Principle | Photodiode with interference filter |
| Spectral range | 280...315 nm |
| Expanded accuracy | ±22% daily in clear sky at 310–330 DU, 45° latitude |
| Cosine error | ±8% for incidence angles < 60° |
| Measuring range | 0...5 W/m² |
| Output | 4...20 mA |
| Power supply | 10...30 V AC/DC |
| Max load | 300 Ω |
| Power consumption | 0.7 W |
| Recalibration interval | Every 2 years |
| Housing | Anodized aluminum |
| Protection | IP66 |
| Installation | DYA034 arm + DYA049 collar on Ø 45–65 mm pole |
| Data logger compatibility | E-Log, Alpha-Log |
| Brand | LSI-Lastem |
