X1-1-UV-3726 UV radiometer
Product Descriptions
X1-1-UV-3726 : UV radiometer for UV-C LEDs and low-pressure Hg germicidal lamps
The UV-3726 model offers all the properties and features of the UV-37 series detectors. They are specially designed for radiometric measurement tasks in the UV spectral region and have been proven in industrial and scientific use over many years.
The UV-3726 detector incorporates a photodiode that is only sensitive in the short-wave spectral range. In conjunction with additional optical filtering, only radiation in the specified spectral sensitivity range is measured. This combination enables the radiometric measurement of UV-C LEDs (Figure 2) and low-pressure mercury lamps (Figure 3). Selectable calibration factors for common UV LED wavelengths and low-pressure Hg lamps increase the measuring accuracy.
To measure the irradiance, the detector’s entrance optic is a diffuser with a cosine field of view, which must be positioned in the desired plane of measurement. The diffuser, optical correction filter and photodiode are pre-aged with UV radiation to significantly reduce the inevitable aging process that results from exposure to UV radiation. The UV-3726 detector shows very little aging effects even in intensive use. Any changes are recorded and corrected as part of the recommended annual recalibration.
The photodiode of the UV-3726 detector offers a strictly linear relationship between the measurement signal and the irradiance in the range from a few pico amps (10-12 A) to several micro amps (10-6 A). When connected to the Gigahertz-Optik X1-1-V02 meter (Figure 1) it provides a linear measurement range up to at least 1000 mW / cm² with a resolution of 0.002 µW / cm².
| General | |
| Short description | UV radiometer for UV-C LEDs and low-pressure Hg germicidal lamps |
| Main features | Mobile measuring device with separate detector. Easy to use. Large measuring range for high radiation intensities for disinfection and low radiation levels for the evaluation of the UV radiation risk. |
| Measurement ranges | For UV LEDs from 250 nm to 300 nm and 254 nm low pressure Hg lamps. Linear measuring range from 0.02 µW / cm² to 1000 mW / cm² with X1-1-V02 meter. |
| typical applications | UVGI for disinfection of air and surfaces |
| Calibration | alibration of the spectral responsivity in 5 nm steps from 250 to 300 nm. Additional calibration factors for 254 nm and for the spectral range average, 260 to 290 nm. |
