Optical Sensors & Detector – UV Photodetectors
UVC Photodetector – TOCON_C9UVC
High-Precision Photodetector for Accurate Germicidal UVC Measurement, Sterilisation Control, and Industrial Radiation Monitoring
The TOCON_C9UVC from SGLUX GmbH is a high-performance UVC photodetector designed for precise measurement of germicidal radiation around 254 nm in sterilisation, disinfection, and photometric control systems. It integrates a UVC-filtered silicon carbide (SiC) photodiode with a logarithmic amplifier, producing a voltage output proportional to UVC irradiance across an exceptionally wide dynamic range.
Operating strictly within the 220–280 nm range, the TOCON_C9UVC is spectrally pure—blocking UVB, UVA, and visible light—to guarantee accurate UVC detection even in mixed-source environments. The sensor’s compact TOCON housing offers robust mechanical protection, fast response time, and outstanding temperature stability, ensuring long-term reliability in continuous operation.
Factory-calibrated and traceable to NIST / PTB standards, the TOCON_C9UVC ensures reproducible measurement accuracy. It is ideal for UV-C disinfection system monitoring, lamp testing, environmental safety verification, and industrial process control applications demanding stable and traceable UVC quantification.
Understanding UVC Photodetector - TOCON_C9UVC
The TOCON_C9UVC employs a solar-blind SiC photodiode coupled with a built-in logarithmic amplifier to deliver a smooth voltage output corresponding to incident UVC intensity. With its narrowband optical filter, it selectively responds to 220–280 nm radiation, perfectly matching germicidal mercury-lamp emission peaks near 254 nm.
Its logarithmic signal response ensures exceptional dynamic range—from weak to high-intensity UVC—without saturation. Fast response, low dark current, and high temperature stability make it ideal for continuous irradiance monitoring. Traceable calibration ensures measurement repeatability for disinfection systems, lamp validation, and scientific UV studies in both research and industrial environments.
Technical Specifications
| Feature | Specification |
|---|---|
| Function | UVC photodetector with integrated logarithmic amplifier |
| Detector Type | Silicon carbide (SiC) photodiode with UVC optical filter |
| Spectral Range | 220 – 280 nm (UVC only) |
| Peak Wavelength | 254 nm |
| Output Signal | Logarithmic voltage output proportional to UVC irradiance |
| Dynamic Range | >6 decades |
| Response Time | <1 s |
| Spectral Selectivity | Excellent – rejects UVB, UVA, and visible light |
| Operating Voltage | 5 – 24 V DC |
| Operating Temperature | −20 … +85 °C |
| Housing Material | Anodised aluminium TOCON enclosure |
| Optical Window | UV-grade fused silica |
| Connector | BNC / M8 / custom cable output |
| Calibration | Factory-calibrated, traceable to NIST / PTB |
| Compatibility | SENSOR MONITOR 5.0 / VOLTCON / SGCD4 systems |
| Applications | Germicidal UVC measurement, steriliser control, leak detection, UV process monitoring |
Key Features and Advantages
High-Sensitivity UVC Detection
The TOCON_C9UVC is optimised for precise measurement of germicidal wavelengths between 220 nm and 280 nm, with a spectral peak near 254 nm, perfectly aligned with low-pressure mercury lamp emissions used in disinfection systems.
Logarithmic Output and Wide Dynamic Range
Unlike linear detectors, the TOCON_C9UVC features a logarithmic output, enabling accurate readings across more than six orders of magnitude in irradiance. This makes it ideal for systems where UVC intensity fluctuates over large ranges.
Integrated Amplifier for Plug-and-Play Use
The built-in low-noise logarithmic amplifier converts photocurrent to voltage directly, removing the need for external electronics. This simplifies installation and ensures signal consistency, even over long cables.
Spectral Purity and UV Rejection
Equipped with a high-quality UVC bandpass filter, the sensor completely blocks UVB, UVA, and visible radiation—ensuring that only germicidal UVC photons contribute to the measurement.
Traceable Calibration and Long-Term Stability
Every TOCON_C9UVC unit is factory-calibrated and traceable to NIST / PTB, ensuring globally recognised measurement precision. Its rugged construction and temperature-stable SiC photodiode provide years of stable operation under continuous UV exposure.
Compact and Robust Design
Encased in an anodised aluminium TOCON housing with a UV-grade fused silica window, the sensor withstands harsh environmental and mechanical conditions common in industrial and laboratory setups.
Seamless Integration
Fully compatible with SENSOR MONITOR 5.0, VOLTCON, and SGCD4 systems, the TOCON_C9UVC supports real-time UVC intensity monitoring, automated feedback control, and data logging in sterilisation, calibration, and quality-assurance systems.
Applications Across Industries
UV-C Disinfection and Sterilisation Control
The TOCON_C9UVC is widely deployed in air, water, and surface disinfection units to monitor lamp output and ensure that germicidal doses remain within safe and effective limits. Its fast response allows for real-time control of UVC emitters, maintaining performance in medical, laboratory, and HVAC systems.
Lamp and LED Performance Testing
In lamp manufacturing and R&D, it serves as a reference detector for verifying emission intensity and spectral output of UVC LEDs and mercury lamps, guaranteeing product uniformity and compliance.
Environmental and Safety Monitoring
The sensor detects UVC leakage from sterilisation chambers, biosafety cabinets, and industrial systems, preventing accidental overexposure and ensuring occupational safety compliance.
Industrial Process Control
In photochemical and polymer curing processes, the TOCON_C9UVC enables accurate irradiance feedback for process optimisation and consistent material properties.
Scientific Research and Calibration
Calibration laboratories and research facilities use it for UVC source characterisation, spectral verification, and radiometric calibration due to its stability, selectivity, and traceable accuracy.
OEM and Automation Integration
Compact and maintenance-free, it easily integrates into automated UV monitoring systems or OEM disinfection products, offering reliable UVC tracking with minimal setup requirements.
Across healthcare, manufacturing, and research, the TOCON_C9UVC provides traceable, stable, and interference-free UVC measurement, ensuring safe, efficient, and compliant operation of germicidal systems.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX TOCON_C9UVC in India
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Expertise in UV-C measurement, safety, and photometric calibration
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Local calibration services traceable to NIST / PTB standards
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Affordable solutions for industrial, OEM, and research clients
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Pan-India support for integration, maintenance, and technical consultation
United Spectrum delivers precision, reliability, and service excellence—making it the preferred partner for UVC intensity measurement and disinfection verification in India.
FAQs
Exclusive distributor of SGLUX TOCON_C9UVC in India Expertise in UV-C measurement, safety, and photometric calibration Local calibration services traceable to NIST / PTB standards Affordable solutions for industrial, OEM, and research clients Pan-India support for integration, maintenance, and technical consultation United Spectrum delivers precision, reliability, and service excellence—making it the preferred partner for UVC intensity measurement and disinfection verification in India.
It measures UVC radiation between 220 nm and 280 nm, peaking at 254 nm.
Does it respond to UVB or visible light?
No, the detector’s optical filter blocks all non-UVC wavelengths, ensuring pure germicidal measurement.
Does it require an external amplifier?
No – the TOCON_C9UVC has a built-in logarithmic amplifier providing direct voltage output.
Is calibration provided?
Yes, it comes factory-calibrated and traceable to NIST / PTB standards.
What applications suit the TOCON_C9UVC best?
Ideal for UVC disinfection monitoring, lamp testing, safety verification, and industrial process control.
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FAQs
Exclusive distributor of SGLUX TOCON_C9UVC in India Expertise in UV-C measurement, safety, and photometric calibration Local calibration services traceable to NIST / PTB standards Affordable solutions for industrial, OEM, and research clients Pan-India support for integration, maintenance, and technical consultation United Spectrum delivers precision, reliability, and service excellence—making it the preferred partner for UVC intensity measurement and disinfection verification in India.
It measures UVC radiation between 220 nm and 280 nm, peaking at 254 nm.
Does it respond to UVB or visible light?
No, the detector’s optical filter blocks all non-UVC wavelengths, ensuring pure germicidal measurement.
Does it require an external amplifier?
No – the TOCON_C9UVC has a built-in logarithmic amplifier providing direct voltage output.
Is calibration provided?
Yes, it comes factory-calibrated and traceable to NIST / PTB standards.
What applications suit the TOCON_C9UVC best?
Ideal for UVC disinfection monitoring, lamp testing, safety verification, and industrial process control.


