SU-220: USB output UV-A Sensor

The SU-220 UV-A, smart sensor can be connected directly to a computer (Windows or macOS X) via USB for taking spot measurements or graphing and datalogging real-time PPFD using the included software. The sensor can also act as a stand-alone PAR datalogger by simply connecting it to most standard 5 V DC USB power plugs. Internal memory within the sensor head is capable of storing 10,000 user-specified periodic measurements that can be downloaded as a CSV file to a computer for analysis.

The sensor offers 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. Typical applications include monitoring the filtering ability and stability of various materials, measuring UV-A radiation in outdoor environments and laboratory use, and monitoring UV radiation in horticultural operations environments. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.

SPECIFICATIONS

Resolution : 0.1 µmol mˉ² sˉ¹

Calibration Factor:Custom for each sensor and stored in the firmware

Calibration Uncertainty: ± 5 %

Measurement Range: 0 to 100 W mˉ²

Measurement Repeatability: Less than 0.5 %

Long-term Drift: Less than 2 % per year

Non-linearity: Less than 1 %

Response Time: Less than 1 ms

Field of View: 180°

Spectral Range: 305 to 390 nm (wavelengths where response is greater than 10 % of maximum)

Directional (Cosine) Response: ± 2 % at 45˚; ± 5 % at 75˚ zenith angle Temperature Response: Less than ¬0.1 % per Cº

Operating Environment: -30 to 85 C; 0 to 100 % relative humidity

Dimension: 30.5 mm diameter, 37 mm height

Mass: (5 m of cable)140 g

USB Cable: 4.5 m (15 ft)

Current Draw: (when Logging)61 mA

Warranty: 4 years against defects in materials and workmanship

Manufactured: Assembled in the USA