The SU-100 incorporates a photodiode that measures combined UVA and UVB radiation. The sensor housing design features a fully potted, domed-shaped head making the sensor self-cleaning. Ultraviolet (UV) radiation constitutes a portion of the electromagnetic spectrum from 100nm to 400nm. This sensor detects UV radiation from 250nm to 400nm and is calibrated in photon flux units of micromoles per square meter per second (Ámol·m-2s-1). The output also can be expressed in energy flux units of Watts per square meter (W·m-2, equal to Joules per second per square meter).
The sensor provides at its output a voltage proportional to the intensity of the light in the ultraviolet range of the spectrum, with a maximum of 26mV.
Low levels of UV light have a positive effect on plant growth and seed germination, while higher levels can be harmful or even toxic. Use this sensor to measure UV intensity, whether from the sun, fluorescent lights, germicidal lamps or some other source of UV radiation.
UV Sensor Features
- Sensitivity: 0.2 mV per Ámol·m-2s-1; 0.58 mV per W·m-2
- Calibration Factor: 5.0 Ámol·m-2s-1 per mV (reciprocal of sensitivity); 1.65 W·m-2 per mV
- Maximum Output: 26mV (at 170 Ámol·-2s-1
- Accuracy: ▒10%
- Measurement Repeatability: Within ▒1%
- Long-term Drift: Less than 3% per year
- Non-linearity: Less than 1% (up to 300 Ámol·m-2s-1)
- Response Time: Less than 1 millisecond
- Field of View: 180░
- Spectral Range: 250nm to 400nm
- Directional (Cosine) Response: ▒10% at 75░ zenith angle
- Temperature Response: Approximately 0.1% per C
- Operating Environment: -40 to +70 ░C; 0-100% RH
- Dimensions: 2.4cm diameter; 2.8cm height
- Mass: 75g
- Cable: 3m of shielded, twisted-pair wire; Santoprene rubber jacket; Pigtail lead wires
Compatible with Waspmote This sensor can be used in a Waspmote wireless sensor platform by plugging it into the Waspmote Agriculture Sensor Board PRO.