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Original factory packaging
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Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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SU-200 Specification Sheet
The SU-221 is a digital UV-A sensor with SDI-12 communication protocol and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The sensor offers a low-cost option for detecting UV radiation from 300 to 400 nm and is 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 to simplify sensor removal and replacement for maintenance and recalibration.
| Power Supply | 5.5 to 24 V DC |
| Current Draw | 1.4 mA (quiescent), 1.8 mA (active) |
| Calibration Factor | Custom for each sensor and stored in 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 0.6 s |
| 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 C |
| Operating Environment | -30 to 85 C; 0 to 100 % relative humidity |
| Dimensions | 30.5 mm diameter, 37 mm height |
| Mass (with 5 m of cable) | 140 g |
| Cable | 5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector |
| Warranty | 4 years against defects in materials and workmanship |
| Manufactured | Made in the USA |
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