Optical Sensors & Detector – UV Index Measurement
UVI-Solo
UVI-Solo Compact UV Index Sensor for Real-Time Outdoor Solar Radiation and Erythema Monitoring
The UVI-Solo is a compact, factory-calibrated UV Index (UVI) sensor designed by SGLUX GmbH for direct, real-time measurement of solar ultraviolet radiation in outdoor environments.
It integrates a SiC-based photodiode, erythema-weighted optical filter, and amplifier in a single weatherproof housing, providing a linear voltage output (0–5 V) proportional to the UV Index value.
With its CIE erythema-matched spectral response, the UVI-Solo enables biologically accurate UV monitoring for meteorological networks, smart city UV displays, IoT weather nodes, and personal safety systems.
Engineered for low power consumption and long-term stability, it delivers traceable, maintenance-free performance with calibration certified to NIST/PTB standards.
Its durable, UV-resistant enclosure and temperature-compensated electronics ensure reliable operation under extreme environmental conditions.
The UVI-Solo represents a complete, plug-and-measure solution for precise and continuous UV Index measurement.
Understanding UVI-Solo
The UVI-Solo measures erythemally effective UV radiation between 280 – 400 nm, reproducing the human skin sensitivity defined by the CIE erythema action curve.
By integrating a UV photodiode, optical filter, and signal amplifier, it outputs a ready-to-use voltage proportional to the UV Index, eliminating external circuitry.
Its solar-blind detector rejects visible and infrared light (>10¹⁰ suppression), providing accurate daytime readings under direct sunlight.
Calibrated and temperature-stabilised, the sensor offers consistent performance for outdoor, industrial, and research applications, from meteorological measurement networks to wearable UV monitoring systems.
Technical Specifications
| Feature | Specification |
| Function |
Compact UV Index (Erythema-weighted) sensor
|
| Detector Type |
SiC (Silicon Carbide) photodiode with optical filter
|
| Spectral Range |
280 – 400 nm (CIE erythema weighted)
|
| Peak Wavelength | 295 nm |
| Output Signal |
0 – 5 V DC (linear to UV Index)
|
| Sensitivity |
1 V ≈ 2.5 UVI (approximate)
|
| Visible Blindness (Smax/S>405 nm) | > 10¹⁰ |
| Accuracy | ±5 % of reading |
| Temperature Compensation | Active circuit built-in |
| Operating Voltage | 5 V DC |
| Power Consumption | < 10 mW |
| Output Impedance | < 100 Ω |
| Response Time | < 200 ms |
| Operating Temperature | −40 … +85 °C |
| Storage Temperature | −55 … +100 °C |
| Connector Type |
M8 / Cable pigtail (custom options available)
|
| Housing |
UV-resistant, waterproof IP67 enclosure
|
| Calibration | NIST / PTB traceable |
| Dimensions | Ø 22 mm × 60 mm |
| Weight | Approx. 80 g |
| Compatibility |
SENSOR MONITOR 5.0 / VOLTCON / SGCD4 / Digiboard
|
Key Features and Advantages
Erythema-Weighted Accuracy
The UVI-Solo reproduces the CIE erythema spectral weighting, providing biologically meaningful UV Index readings for public health and research applications.
All-in-One Compact Sensor
Combines a SiC photodiode, optical filter, and precision amplifier into one integrated, weather-proof module for easy installation.
Solar-Blind, Noise-Free Performance
Visible and infrared rejection (> 10¹⁰) ensures pure UV detection with outstanding signal stability even in bright daylight.
Factory-Calibrated to NIST/PTB
Delivered fully calibrated and traceable, ensuring long-term reliability and global measurement comparability.
Temperature-Stable Design
Active compensation electronics maintain calibration consistency across varying outdoor temperatures (−40 °C to +85 °C).
Plug-and-Play Output
Provides a 0–5 V DC linear output directly proportional to UV Index; no additional amplifier needed.
Durable, Weather-Resistant Build
IP67 housing ensures full protection against dust, moisture, and UV degradation for permanent outdoor use.
Low Power for IoT Integration
Consumes < 10 mW, ideal for solar-powered data loggers, weather nodes, and smart city UV Index displays.
Compact, stable, and traceably calibrated, the UVI-Solo is the ideal choice for meteorological, research, and wearable UV Index monitoring systems.
Applications Across Industries
Meteorological and Environmental Monitoring
Deployed in weather and climate stations for continuous UV Index measurement and public UV alerts.
Smart City and Public Health Systems
Feeds real-time UVI data to outdoor digital displays and air-quality dashboards for community safety.
Wearable and Portable UV Devices
Used in personal UV exposure monitors and compact IoT instruments for daily sun-safety awareness.
Scientific and Photobiological Research
Provides reliable erythema-weighted UV data for research on solar radiation effects, ozone variation, and atmospheric UV studies.
Industrial and Material Testing
Enables UV exposure tracking for weathering and polymer degradation analysis.
Calibration and Verification
Serves as a secondary reference sensor for verifying TOCON-series or other UV radiometric instruments.
The UVI-Solo combines precision, portability, and rugged reliability, making it indispensable for environmental, scientific, and public-safety UV monitoring applications.
Why Choose United Spectrum Instruments?
-
Exclusive distributor of SGLUX UVI-Solo Sensors in India
-
Local calibration support traceable to NIST/PTB standards
-
Expertise in UV Index, environmental monitoring, and IoT integration
-
Competitive pricing for OEMs, meteorological agencies, and research labs
-
Nationwide after-sales service and integration assistance
FAQs
What does the UVI-Solo measure?
It measures erythemally weighted UV radiation to provide UV Index (UVI) values.
Is the sensor solar blind?
Yes – visible and infrared radiation are suppressed by > 10¹⁰ for pure UV detection.
Does it require calibration?
No – it is factory-calibrated and NIST/PTB traceable.
Can it be used outdoors continuously?
Yes, the IP67 housing and temperature compensation ensure reliable long-term outdoor operation.
How does United Spectrum support customers in India?
Through system integration, calibration, and nationwide technical service for environmental and UV Index monitoring projects.
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FAQs
What does the UVI-Solo measure?
It measures erythemally weighted UV radiation to provide UV Index (UVI) values.
Is the sensor solar blind?
Yes – visible and infrared radiation are suppressed by > 10¹⁰ for pure UV detection.
Does it require calibration?
No – it is factory-calibrated and NIST/PTB traceable.
Can it be used outdoors continuously?
Yes, the IP67 housing and temperature compensation ensure reliable long-term outdoor operation.
How does United Spectrum support customers in India?
Through system integration, calibration, and nationwide technical service for environmental and UV Index monitoring projects.
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