Introduction to Sensor
The SU-321-SS Digital UV Index Sensor provides reliable measurement of UV Index and UV-B radiation from 270–315 nm using SDI-12 digital communication. Its rugged design and high-quality cable with pre-tinned pigtail leads enable easy integration with data loggers and controllers, making it suitable for outdoor environmental monitoring, research, and UV exposure studies.
Specifications
Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 5.5 to 24 V DC |
| Calibration Factor (Reciprocal of Sensitivity) | Custom for each sensor and stored in the firmware |
| Calibration Uncertainty | ±10 % |
| Output | SDI-12 |
| Measurement Range | 0 to 50 UV Index Units |
| Measurement Repeatability | Less than 0.5 % |
| Long-term Drift | Less than 5 % per year |
| Non-linearity | Less than 1 % |
| Response Time | Less than 0.6 ms; fastest data transmission rate for SDI-12 circuitry is 1 s |
| Field of View | 180° |
| Spectral Range | 270–315 nm (wavelengths where response is greater than 50 % of maximum) |
| Directional (Cosine) Response | ±10 up to 75° |
| Temperature Response | Less than 0.1 % per C |
| Operating Environment | -40 to 80 °C; 0 to 100 % relative humidity |
| Dimensions | 30.5 mm diameter × 37 mm height |
| Mass (with 5 m Cable) | 140 g |
| Cable | 5 m shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires |
| Warranty | 4 years against defects in materials and workmanship |
| Manufacturing | Assembled in the USA |
Features
Applications
Environmental Studies
Laboratory Research
Solar Radiation Studies
Agricultural Research
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