Optical Sensors & Detector – UV Calibration
UV Calibration, UV Index
Precision UV Calibration and UV Index Measurement System for Environmental, Industrial, and Scientific Applications
The UV Calibration and UV Index Measurement System is a precision-engineered photometric instrument designed to accurately measure ultraviolet irradiance and calculate the UV Index in compliance with WMO and ISO 17166 (CIE S007/E-1998) standards. It ensures traceable calibration of UV sensors, radiometers, and meteorological instruments to NIST or PTB reference levels. Using a temperature-compensated SiC or GaP photodiode with erythema-weighted responsivity, the system measures spectral irradiance in the UVA (315–400 nm) and UVB (280–315 nm) regions and automatically computes the UV Index value. Compact, stable, and long-term drift-free, the instrument is ideal for environmental monitoring stations, phototherapy validation, material ageing studies, and calibration laboratories. With robust design, digital interface, and integrated data logging, the UV Calibration & UV Index System ensures accurate, traceable, and real-time UV exposure quantification across diverse scientific and industrial environments.
Understanding UV Calibration, UV Index
The UV Calibration and UV Index System measures total biologically effective UV irradiance and expresses it as a standardised UV Index—a measure of potential skin-exposure risk from solar UV radiation. Its detector is spectrally weighted to the erythemal response of human skin, ensuring direct comparability with international UV Index scales. The system’s calibration process aligns with NIST/PTB traceability, ensuring accuracy and consistency for radiometers, UV sensors, and outdoor monitoring networks. Designed for stability and reproducibility, it enables both field and laboratory calibration of UV instruments, providing reliable UV intensity and index readings for research, environmental, and industrial monitoring applications.
Technical Specifications
| Feature | Specification |
| Measurement Parameter |
UV Irradiance (mW/m²) and UV Index
|
| Spectral Range |
280 – 400 nm (UVB + UVA)
|
| Spectral Weighting |
Erythema (CIE S007/E-1998)
|
| Detector Type |
SiC or GaP Photodiode (calibrated)
|
| Responsivity |
Erythema-weighted (biological)
|
| Calibration Reference | NIST / PTB traceable |
| Accuracy |
±2% (laboratory) / ±5% (field use)
|
| Measurement Range | 0.01 – 200 W/m² |
| Response Time | < 100 ms |
| Temperature Coefficient | < 0.1 %/K |
| Output Signal |
0–10 V / 4–20 mA / RS-485 Modbus
|
| Display |
Digital LCD / OLED (UV Index readout)
|
| Data Interface |
USB / RS-232 / Ethernet
|
| Power Supply |
5–12 V DC / Solar / Battery
|
| Operating Temperature | −40 … +70 °C |
| Housing Material |
Anodised Aluminium / UV-Stable Polymer
|
| Mounting Option |
Tripod / Weather Station Bracket
|
| Calibration Interval |
Annual (recommended)
|
Key Features and Advantages
Erythema-Weighted Accuracy
The system’s spectral response matches the human skin’s erythemal sensitivity curve, ensuring biologically relevant UV Index readings comparable with meteorological standards.
Traceable Calibration
Each unit is factory-calibrated to NIST or PTB reference standards, guaranteeing accuracy for environmental and laboratory applications.
Real-Time UV Index Measurement
The integrated microcontroller computes UV Index in real time, providing instant data for weather reporting or safety systems.
Multi-Spectral Responsivity
Covers both UVA and UVB regions, allowing simultaneous total UV measurement for environmental and industrial analysis.
Rugged, All-Weather Design
Built with anodised aluminium housing, UV-stable optics, and environmental sealing (IP65/IP67), it operates in harsh outdoor conditions.
Data Connectivity and Logging
Offers USB, RS-485, and Ethernet interfaces for data logging, integration into weather stations, or industrial automation systems.
Compact and Portable
Lightweight design allows easy deployment for temporary field studies, rooftop monitoring, or calibration setups.
Compliance with International Standards
Fully compliant with CIE, ISO, WMO, and WHO UV Index guidelines, ensuring global measurement compatibility.
The system combines spectral precision, durability, and traceable calibration to deliver reliable UV irradiance and UV Index readings in any environment.
Applications Across Industries
Meteorological and Environmental Monitoring
Used in national weather networks, climate stations, and solar observation systems for accurate UV Index reporting.
Public Health and Safety
Supports UV exposure monitoring for dermatological research, occupational safety, and public health awareness programs.
Industrial and Photochemical Processing
Measures UV intensity in manufacturing processes like curing, polymerisation, and photochemical reactions requiring controlled irradiance.
Medical and Phototherapy Validation
Ensures precise UV dose calibration in phototherapy and dermatological treatment equipment.
Material Ageing and Solar Simulation
Used in test chambers for validating UV exposure on plastics, coatings, and outdoor materials.
Research and Academic Studies
Ideal for atmospheric science, climate modelling, and spectral analysis of solar radiation.
By combining traceable calibration, biological weighting, and robust performance, the system is the preferred solution for accurate UV intensity and index monitoring across scientific, industrial, and environmental domains.
Why Choose United Spectrum Instruments?
-
Exclusive distributor of SGLUX UV Index and Calibration systems in India
-
Local calibration support aligned with NIST/PTB traceability
-
Expert consultation for weather, laboratory, and OEM integrations
-
Competitive pricing for environmental and industrial applications
-
Nationwide after-sales service, data logging support, and annual recalibration assistance
FAQs
What is the UV Index?
It represents the intensity of erythemally weighted UV radiation reaching the Earth’s surface.
How is the system calibrated?
Each detector is calibrated to NIST/PTB standards and traceable to ISO/CIE reference spectroradiometers.
Can it be used outdoors continuously?
Yes, it’s weather-sealed (IP65/IP67) and designed for long-term outdoor monitoring.
What UV bands are measured?
The system measures combined UVA and UVB irradiance from 280–400 nm.
How does United Spectrum support Indian customers?
By providing certified calibration, expert consultation, and nationwide service with locally stocked sensors.
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FAQs
What is the UV Index?
It represents the intensity of erythemally weighted UV radiation reaching the Earth’s surface.
How is the system calibrated?
Each detector is calibrated to NIST/PTB standards and traceable to ISO/CIE reference spectroradiometers.
Can it be used outdoors continuously?
Yes, it’s weather-sealed (IP65/IP67) and designed for long-term outdoor monitoring.
What UV bands are measured?
The system measures combined UVA and UVB irradiance from 280–400 nm.
How does United Spectrum support Indian customers?
By providing certified calibration, expert consultation, and nationwide service with locally stocked sensors.
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