6490-UV Ultraviolet Sensor

Measures the sunburning portion of the UV spectrum. Allows you to display UV index, dose rate, and daily and accumulated dose.
Multi-layer filter provides a spectral response that closely matches the Erythema Action Spectrum. Diffuser provides excellent cosine response. Two-piece housing minimizes radiation heating, allows convection cooling of the sensor, and prevents the trapping of water or dust. Includes built-in level and 2' (0.6 m) cable.

Operating Temperature: to +150° F (-40° to +65° C)
Storage Temperature:  -50° to +158°F (-45° to +70°C)
Transducer: Semiconductor photodiode
Spectral Response: 280 to 360 nm (Erythema Action Spectrum)
Cosine Response: ±4% of reading (0° to 65° incident angle); ±9% of reading (65° to 85° incident angle)

Supplied Cable Length: 3' (0.9 m)
Cable: Type  4-conductor, 26 AWG
Connector:  Modular RJ-11
I/O Specs:
     Green wire  Output (0 to 2.5VDC); 150 mV per UV Index, 364 mV per MED/hour
     Black & Red wires  Ground
     Yellow wire  +3V ±10%, 2.4 mA
Housing Material:  UV-resistant ABS plastic
Dimensions (length x width x height):  2” x 2.75” x 2.25” (51 mm x 70 mm x 57 mm)
Weight: 0.5 lbs. (226 g)

Sensor Output
Ultra Violet (UV) Radiation Dose
     Resolution and Units: 0.1 MEDs to 19.9 MEDs; 1 MED above 19.9 MEDS
     Range: 0 to 199 MEDs
     Accuracy  ±5% of daily total
     Drift  up to ±2% per year
     Update Interval  50 seconds to 1 minute (5 minutes when dark)
Ultra Violet (UV) Radiation Index
     Resolution and Units: 0.1 Index
     Range: 0 to 16 Index
     Accuracy: ±5% of full scale (Reference: Yankee UVB-1 at UV Index of 10 [extremely high]) plus 0.5 UV Index per 100' (30 m) of
     additional cable
     Cosine Response:  ±4% (0× to 65× incident angle); 9% (65× to 85× incident angle)