UVC Radiometers
UV-C radiometers / UVC light meters for measuring the irradiance (µW/cm²) and dose (mJ/cm²) of germicidal lamps including Hg, excimer and xenon lamps as well as UV-C LEDs. Compact, laboratory grade UVC meters for use in the field, product development and research. UVC Meter Product Selection Guide below:
Short wavelength high energy ultraviolet radiation in the UV-C spectral range from 100 nm to 280 nm is widely used in the germicidal and bactericidal disinfection of air, surfaces and water.
UVC radiation is lethal to airborn pathogens that can cause diseases like tuberculosis. The COVID-19 pandemic has sparked a marked increase in demand for germicidal UV sources and the need for accurate measurements with suitable UVC light meters.
In order to maintain Ultraviolet Germicidal Irradiance (UVGI) efficacy while ensuring safety from overexposure to UV radiation, measurements of the germicidal sources and areas of application are performed.
Due to its high and pre-dominantly monochromatic output at 253.7nm, low pressure mercury has historically been the light source of choice in UV-C germicidal applications. Medium and high pressure mercury sources are also in use as well as pulsed Xenon.
New developments in germicidal UV sources of particular note are UV-C LED arrays (265-280)nm and far UV lamps such as excimer KrCl (222nm).
Our range of UVC radiometers enable measurements in accordance with important standards for germicidal UVC products including IEC/EN 62471, DIN/TS 67506, and IEC 60335-2-65. See application note about Germicidal UVC Standards for a full description.
Gigahertz Optik GmbH offers a comprehensive range of UVC radiometers, UVC light meters and UVC spectroradiometers designed and calibrated for the accurate measurement of irradiance and dose of all these germicidal UV source technologies. This means our UV detectors often offer several calibration entries for different UV sources. This is the bases for accurate UVC measurements with such a UVC meter.
Spectral responsivity of UVC detector range
UVC radiometers in general are available based on two different technologies:
- Integral measuring UVC radiometers / UVC light meters are most suited for routine measurements of the UV irradiance from known source types. These UVC light meters are inexpensive and very easy to use and are based on filtered photodiode detectors which are read out by transimpedance amplifiers.
- UVC spectroradiometers are ideal for research work and product development or quality control of UVC light sources. They provide greatest radiometric accuracy independent of the source type and deep analyses of the spectral shape of the UVC radiator. We offer superb stray light correction for our array-spectroradiometers in the UVC spectral range. Our UVC spectral light meters are very easy to use and all corrections are automatically applied for easy to access high accurate UVC spectral measurements, e.g. of UVC LEDs which tend to drift in wavelenght by temperature and show significant aging.
Gigahertz-Optik developed a product range of compact integral and spectral measuring UVC measurement systems and meters. These are portable, hand-held system and easy-to-use. Our spectroradiometer offers superb stray light reduction for highest measurement accuracy.
Nowadays, due to the many different light sources, also the UVC radiometer has to offer different calibrations for e.g. LEDs, Excimer lamps or Mercury sources. We offer such standard calibrations as well as individual calibrations. Of course, these are traceable to NMI like NIST or PTB. Our high quality calibration and testing laboratory can also perform extensive ISO 17025 calibrations or tests.
See one of the most versatile and powerful ranges of UVC measurement systems:
UVC meters for irradiance (µW/cm²) and dose (mJ/cm²) measurements of germicidal Hg, excimer as well as UV-C LEDs.
Typically used for routine measurement of UV irradiance from known source types.
| Model | Image | Spectral function | Wavelength range / nm | Entrance optic | Typical range min. (NEI) | Typical range max. | Remark | |
|---|---|---|---|---|---|---|---|---|
| X1-UV-3725 |
|
UVC / UVGI | 254 | 8 mm Ø diffuser | 0.002 µW / cm² | 2000 mW / cm² | Calibrated at 254nm for low pressure Hg lamps. Meter for irradiance and dose with peak-hold function. Large dynamic range for germicidal efficacy and hazard measurements. Good cosine response. | |
| X1-UV-3726 |
|
UV-C / UVGI | 250 -300 | 11 mm Ø diffuser | 0.002 µW / cm² | 1000 mW / cm² | Calibrated in 5nm steps for UV-C LEDs and at 254nm for low pressure Hg lamps. Meter for irradiance and dose with peak-hold function. Large dynamic range for germicidal efficacy and photobiological safety measurements. | |
| X1-UV-3727 |
|
UVC / UVGI | 200 - 300 | 19.2 mm Ø diffuser | 0.002 µW / cm² | 1000 mW / cm² | For Excimer Kr-Cl lamps, low pressure Hg lamps and UV-C LEDs. Calibrated at 222nm, 254nm and in 5nm steps. Meter for irradiance and dose with peak-hold function. Large dynamic range for germicidal efficacy and photobiological safety. | |
| X1-UV-3718 |
|
UVC / UVGI | 254 | 11 mm Ø diffuser | 0.005 µW / cm² | 2500 mW / cm² | Calibrated at 254nm for low pressure Hg lamps. Meter for irradiance and dose with peak-hold function. Replaces X9-11 model. |
UV spectroradiometers for measuring the spectral irradiance and spectral flux of germicidal lamps including low pressure Hg, excimer and xenon lamps as well as UV-C LEDs
UV spectroradiometers are ideal for research work and product development. They provide greatest radiometric accuracy independent of the source type. We offer superb stray light correction in the UVC spectral range.
| Model | Image | Entrance optic | Wavelength range / nm | Optical Bandwidth | Measurement range - min | Measurement range - max | Remark | |
|---|---|---|---|---|---|---|---|---|
| BTS2048-UV |
|
10 mm Ø Cosine diffuser f2 ≤ 3% | 200 - 430 | 0.8 nm | 0.1 mW/(m²nm) @265nm | 100 kW/(m²nm) @265nm | UV-optimised spectroradiometer. Compact, laboratory grade instrument with integrated precision cosine diffuser. Supplied with traceable calibration certificate. | |
| CSS-45-UV |
|
CSS-45-UV | (200 -440) nm | 5.5 nm | typ. 10E-4 W/(m²nm) | typ. 10E2 W/(m²nm) | Compact UV spectroradiometer in 37 mm detector housing. Can be combined with CSS-D display unit or direct PC remote control (USB). | |
| BTS256-UV |
|
9 mm Ø Cosine diffuser | 200 - 525 | 2.8 nm | 20 mW/(m²nm) @265nm | 10 kW/(m²nm) @265nm | Ultra-thin UV spectroradiometer with integral display for high intensity UV radiation. | |
| TFUV10 |
|
100 mm Ø sphere 25.4 mm Ø entrance | 200 - 550 | 1 nm | 0.02 µW / nm @ 265nm | 20 W / nm @265 nm | Measurement system for spectral radiant power of UV LEDs in a wavelength range from 200 nm to 550 nm. Complete measuring system with integrating sphere, spectroradiometer, software and calibration. |
Mobile UVC reflectance meter
| Model | Image | Measurement geometry | Light Source | Sensor | Control electronics | Remark | |
|---|---|---|---|---|---|---|---|
| LCR-20 |
|
45°/45° and 45°/0° | UV LED 254nm peak | UV-3725 | X1-5 | Mobile UVC reflectance meter for measuring surface reflectance. Permits accurate modelling and site-surveys for germicidal UV applications. |
UV Goniometer (spectral)
| Model | Image | Measurement geometry | Max load | Horizontal resolution | Axial resolution | Remark | |
|---|---|---|---|---|---|---|---|
| GB-GD-360-RB40-2-BTS2048-UV |
|
Goniometer 2-Pi distance 100 - 2000mm | 1.5 kg | 0.1° | 0.2° | Goniometer with high end UV spectroradiometer with high dynamic range for UV lamps and UV LEDs, 200 nm - 430 nm. |
