The DPA817 UV-A radiometer measures atmospheric irradiance in the 315–400 nm spectral range. Using a high-sensitivity photodiode with an optical interference filter, it ensures precise readings under varying sunlight and atmospheric conditions. Housed in anodized aluminum with IP66 protection, it provides 4–20 mA output, operates on 10–30 V AC/DC, and is designed for meteorological and environmental monitoring.
The DPA817 UV-A radiometer is a high-precision sensor designed to measure atmospheric irradiance in the 315–400 nm spectral band. It employs a specially developed silicon photodiode with a thin-film interference filter to enhance spectral selectivity and stability. The sensor is calibrated under real sunlight for optimal response to natural atmospheric conditions, with traceability to ISO17025 standards. A high-quality dome and diffuser improve cosine response, ensuring accurate measurements even at low sun angles.
Application
Suitable for meteorological stations, climate research, and environmental monitoring, the DPA817 delivers reliable UV-A data for scientific studies, public health monitoring, and solar radiation modeling. Its robust anodized aluminum housing and IP66 protection make it ideal for long-term outdoor installations in diverse environments.
Advantages
- High sensitivity photodiode with broadband spectral response
- Accurate cosine response for low-angle radiation
- Calibration under natural sunlight for realistic performance
- ISO17025 traceable
- Rugged anodized aluminum housing with IP66 protection
Application Measures
- Mount using DYA034 arm and DYA049 collar on Ø 45–65 mm pole
- Provide 10–30 V AC/DC power supply
- Connect to a compatible data logger (E-Log, Alpha-Log)
- Recalibrate every two years for optimal accuracy
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement type | UV-A atmospheric irradiance |
| Principle | Photodiode with interference filter |
| Spectral range | 315...400 nm |
| Expanded accuracy | ±18% daily in clear sky at 310–330 DU, 45° latitude |
| Cosine error | ±8% for incidence angles < 60° |
| Measuring range | 0...70 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 |
