| SU-200-SS UVA Sensor |
SU-202-SS UVA Sensor |
SU-205-SS UVA Sensor |
SU-220 UVA Sensor |
SU-221-SS UVA Sensor |
SU-300-SS UV Index Sensor |
SU-321-SS UV Index Sensor |
|
|---|---|---|---|---|---|---|---|
| Power Supply | Self-powered | 5 to 24 V DC | 5.5 to 24 V DC | - | 5.5 to 24 V DC | Self-powered | 5.5 to 24 V DC |
| Output (Sensitivity) | 0.1 mV per W m-2; 0.03 mV per µmol m-2 s-1 |
25 mV per W m-2; 8.33 mV per µmol m-2 s-1 |
50 mV per W m-2; 16.67 mV per µmol m-2 s-1 |
- | - | 0.1 mV per UV Index unit | - |
| Resolution | - | - | - | 0.1 µmol m-2 s-1 | - | - | - |
| Calibration Factor (reciprocal of sensitivity) | 10 W m-2 per mV; 30 µmol m-2 s-1 per mV |
0.04 W m-2 per mV; 0.12 µmol m-2 s-1 per mV |
0.02 W m-2 per mV; 0.06 µmol m-2 s-1 per mV |
Custom for each sensor and stored in the firmware | Custom for each sensor and stored in the firmware | 10 UV index unites per mV | Custom for each sensor and stored in the firmware |
| Calibration Uncertainty | ± 10 % | ± 10 % | ± 10 % | ± 10 % | ± 10 % | ± 10 % | ± 10 % |
| Output Range | 0 to 10 mV | 0 to 2.5 V | 0 to 5 V | USB | SDI-12 | 0 to 5 mV | SDI-12 |
| Measurement Range | 0 to 100 W m-2 | 0 to 100 W m-2 | 0 to 100 W m-2 | 0 to 100 W m-2 | 0 to 100 W m-2 | 0 to 50 UV index units | 0 to 50 UV index units |
| Measurement Repeatability | Less than 0.5 % | Less than 0.5 % | Less than 0.5 % | Less than 0.5 % | Less than 0.5 % | Less than 0.5 % | Less than 0.5 % |
| Long-term Drift (Non-stability) | Less than 2 % per year | Less than 2 % per year | Less than 2 % per year | Less than 2 % per year | Less than 2 % per year | Less than 0.5 % per year | Less than 0.5 % per year |
| Non-linearity | Less than 1 % | Less than 1 % | Less than 1 % | Less than 1 % | Less than 1 % | Less than 1 % | Less than 1 % |
| Response Time | Less than 1 ms | Less than 1 ms | Less than 1 ms | Less than 1 ms | Less than 0.6 s | Less than 1 ms | Less than 0.6 s |
| Field of View | 180° | 180° | 180° | 180° | 180° | 180° | 180° |
| Spectral Range | 300 to 400 nm | 300 to 400 nm | 300 to 400 nm | 300 to 400 nm | 300 to 400 nm | 270 to 315 nm | 270 to 315 nm |
| Directional (Cosine) Response | ± 2 % at 45°; ± 5 % at 75° zenith angle | ± 2 % at 45°; ± 5 % at 75° zenith angle | ± 2 % at 45°; ± 5 % at 75° zenith angle | ± 2 % at 45°; ± 5 % at 75° zenith angle | ± 2 % at 45°; ± 5 % at 75° zenith angle | ± 10 % up to 75° | ± 10 % up to 75° |
| Temperature Response | Less than 0.1 % per C | Less than 0.1 % per C | Less than 0.1 % per C | Less than 0.1 % per C | Less than 0.1 % per C | Less than 0.1 % per C | Less than 0.1 % per C |
| Operating Environment | -35 to 85 C, 0 to 100 % relative humidity | -35 to 85 C, 0 to 100 % relative humidity | -35 to 85 C, 0 to 100 % relative humidity | -35 to 85 C, 0 to 100 % relative humidity | -35 to 85 C, 0 to 100 % relative humidity | -40 to 80 C, 0 to 100 % relative humidity | -40 to 80 C, 0 to 100 % relative humidity |
| Dimensions | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height | 30.5 mm diameter, 37 mm height |
| Mass (with 5 m of cable) | 140 g | 140 g | 140 g | 140 g | 140 g | 140 g | 140 g |
| Warranty | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship | 4 years against defects in materials and workmanship |
Ultraviolet (UV) radiation constitutes a portion of the electromagnetic spectrum from 100 to 400 nm, and is further subdivided into three wavelength ranges: UVA (315 to 400 nm), UVB (280 to 315 nm) and UVC (100 to 280 nm). Much of the UVB and all of the UVC wavelengths from the sun are absorbed by the Earth’s atmosphere. There are also many artificial UV light sources available that output a select wavelength range or offer a broadband UV radiation source.
UVA radiation is important in material sciences and has numerous photobiological effects. For example, exposure to UV radiation can cause plants to produce secondary compounds, including flavonoids and antioxidants. Apogee's new UVA sensors offer a low-cost option for detecting UV radiation from 300 to 400 nm and are calibrated in energy flux units of Watts per square meter.
UVB and the higher frequencies in UVA solar radiation cause skin damage (erythema). The international standard for skin sensitivity to different UV wavelengths is called the erythemal action spectrum. Apogee's UV index sensors closely follow that spectrum. The resulting measurements can be useful for public health information, verifying UVI forecasting models, and testing the effectiveness of UV blockers.
Applications include:
• UV radiation measurement in outdoor environments and laboratory settings
• Measuring the filtering ability and stability of various materials
• Monitoring UV radiation in horticultural operations and environments
If you would like to share your application of this product, please click here
Helpful Articles and Links
Apogee Meter Tips and Troubleshooting
The EPA's Guide to the UV Index
Conversion UV-A Units (SU-200 series)
Conversion PPFD to Watts (SU-100 series)
UV-A Series 200 Calibration Drift Notice
Underwater Measurements: Applying an immersion effect correction factor
Global SunFarm Data Acquisition Network, Energy, CRADLE, and Time Series Analysis
Atmospheric Corrosion of Silver in Outdoor Environments and Modified Accelerated Corrosion Chambers
Time-Dependent Environmental Degradation of Polymeric Fabrics
Programs are in .CR1X format and can be downloaded for use with Campbell Scientific dataloggers. Right click and select "Save target as..." or an equivalent command in your browser. They can also be viewed using Wordpad or other text viewers.
Note: In 2020 the CR1000 Campbell Scientific datalogger was discontinued. Click here to access the discontinued .CR1 format sample datalogger programs >
FAQs