Optical Sensors & Detector – UV Photodetectors
UV Index Photodetector (Erythema) – TOCON_E1
High-Precision Erythema-Weighted UV Sensor for Accurate Solar and Artificial UV Index Measurement Applications
The TOCON_E1 from SGLUX GmbH is a high-accuracy UV Index photodetector designed for precise measurement of erythemally effective ultraviolet radiation (UV Index) according to the ISO 17166:2019 / CIE S 007/E-1998 standard.
It combines a silicon carbide (SiC) photodiode with an erythema-weighted optical filter and a built-in low-noise transimpedance amplifier that produces a linear 0–5 V DC output proportional to the measured UV irradiance.
Covering a spectral range of 250 – 400 nm, the TOCON_E1 simulates the human skin sensitivity to UV exposure and is ideal for solar monitoring, weather stations, dermatological research, and UV safety systems.
Factory-calibrated and traceable to NIST / PTB standards, it ensures reproducible, globally comparable results.
Compact, robust, and maintenance-free, the TOCON_E1 guarantees reliable long-term UV Index measurements under both natural sunlight and artificial UV sources.
Understanding UV Index Photodetector (Erythema) - TOCON_E1
The TOCON_E1 photodetector uses a solar-blind silicon carbide (SiC) photodiode equipped with a precision erythema weighting filter, mimicking the CIE erythema action spectrum.
Its integrated transimpedance amplifier outputs a stable 0–5 V signal directly proportional to the UV Index, enabling direct connection to SGLUX SENSOR MONITOR 5.0, data loggers, or environmental controllers.
The detector provides fast response (<1 s), low drift, and excellent spectral accuracy, ensuring reliable readings for continuous monitoring of solar UV radiation or artificial UV sources.
Traceable factory calibration (NIST/PTB) guarantees repeatable and standardised measurements for environmental, dermatological, and safety applications.
Technical Specifications
| Feature | Specification |
|---|---|
| Function | Erythema-weighted UV photodetector for UV Index measurement |
| Detector Type | Silicon Carbide (SiC) photodiode with erythema-weighted optical filter |
| Spectral Range | 250 – 400 nm (UV-B and UV-A) |
| Spectral Sensitivity | Weighted according to CIE erythema action spectrum |
| Output Signal | 0 – 5 V DC (linear with UV Index) |
| Accuracy | ± 5 % of reading |
| Response Time | < 1 s |
| Visible / IR Rejection | Excellent visible and infrared blindness |
| Operating Voltage | 5 – 24 V DC |
| Operating Temperature | −20 … +85 °C |
| Housing Material | Anodised aluminium TOCON enclosure |
| Optical Window | UV-grade quartz |
| Connector | BNC / M8 / custom cable options |
| Calibration | Factory-calibrated, traceable to NIST / PTB |
| Compatibility | SENSOR MONITOR 5.0 / VOLTCON / SGCD4 systems |
| Applications | UV Index monitoring, solar radiation measurement, dermatology, weather stations, photobiological safety systems |
Key Features and Advantages
Accurate Erythema-Weighted UV Measurement
The TOCON_E1 features a CIE-compliant erythema weighting filter, ensuring precise correlation between the measured signal and human skin UV sensitivity. This makes it ideal for UV Index calculation and dermatological exposure analysis.
Excellent Spectral Selectivity
The SiC photodiode provides complete insensitivity to visible and infrared radiation, ensuring that only erythemally relevant UV wavelengths (250–400 nm) contribute to the signal.
Integrated Low-Noise Amplifier
An internal transimpedance amplifier provides a stable and linear 0–5 V DC output, enabling direct plug-and-play connection without external signal conditioning.
Factory Calibration and Traceability
Each sensor is factory-calibrated and traceable to NIST/PTB standards, ensuring reproducible, internationally standardised UV Index data for both field and laboratory applications.
Fast Response and Long-Term Stability
With a response time under one second and low output drift, the TOCON_E1 ensures accurate, stable measurements even in continuously changing sunlight or artificial lighting conditions.
Rugged Design for Outdoor Use
Encased in a weather-resistant anodised aluminium housing with a UV-grade quartz window, it withstands long-term exposure in meteorological and environmental monitoring systems.
Seamless System Integration
Fully compatible with SENSOR MONITOR 5.0, VOLTCON, and SGCD4 controllers, the TOCON_E1 enables automatic UV Index recording, data logging, and environmental system automation.
Together, these features make the TOCON_E1 a benchmark solution for UV Index determination, sunlight exposure monitoring, and photobiological safety instrumentation.
Applications Across Industries
Meteorological and Environmental Monitoring
Used in weather stations and solar measurement systems, the TOCON_E1 tracks the UV Index and solar UV exposure for public health and environmental studies.
Dermatology and Medical Research
Supports clinical studies and UV therapy systems by providing accurate erythema-weighted measurements for skin-dose analysis and treatment verification.
Public UV Index Display Systems
Ideal for outdoor installations, such as UV Index boards, digital signage, and city weather systems, to inform communities about safe sun exposure levels.
Photobiological Safety Assessment
Used in industrial and laboratory safety setups to ensure compliance with EN 62471 / ICNIRP standards for UV exposure.
Solar Simulator and Lamp Calibration
Serves as a reference detector for calibrating solar simulators, UV curing lamps, and fluorescent sources, ensuring consistent spectral emission profiles.
Agricultural and Environmental Applications
Measures UV radiation exposure in plant growth environments and ecological monitoring, supporting studies on photobiology and environmental impact.
By combining spectral accuracy, durability, and traceable calibration, the TOCON_E1 ensures trustworthy UV Index and erythema-weighted radiation measurement across all sectors.
Why Choose United Spectrum Instruments?
-
Authorised distributor for SGLUX TOCON sensors in India
-
Specialised in UV, blue, and photobiological radiation measurement systems
-
Calibration traceable to NIST / PTB ensuring standardised accuracy
-
Offers custom integration and OEM design support
-
Comprehensive pan-India technical service and calibration support
-
Trusted by research institutes, meteorological departments, and industry leaders for UV measurement reliability
FAQs
What does the TOCON_E1 measure?
It measures erythema-weighted UV radiation corresponding to the UV Index defined by CIE/ISO standards.
What is the wavelength range?
No – it is completely solar-blind and rejects all visible and IR radiation.
Q4. Is calibration included?
Yes – it is factory-calibrated and traceable to NIST/PTB.
What applications is it suitable for?
Ideal for UV Index monitoring, dermatological research, solar radiation analysis, and photobiological safety systems.
Is it affected by visible or infrared light?
No – it is completely solar-blind and rejects all visible and IR radiation.
GET IN TOUCH WITH US
Have Any Questions ?
FAQs
What does the TOCON_E1 measure?
It measures erythema-weighted UV radiation corresponding to the UV Index defined by CIE/ISO standards.
What is the wavelength range?
No – it is completely solar-blind and rejects all visible and IR radiation.
Q4. Is calibration included?
Yes – it is factory-calibrated and traceable to NIST/PTB.
What applications is it suitable for?
Ideal for UV Index monitoring, dermatological research, solar radiation analysis, and photobiological safety systems.
Is it affected by visible or infrared light?
No – it is completely solar-blind and rejects all visible and IR radiation.
WHAT WE OFFER
Reliable Engineering Solutions for Modern Manufacturing
Industrial Laser Systems
Laser Sources
