X1-1-UV-3718 UV radiometer

Product Descriptions
X1-1-UV-3718 : UV radiometer for germicidal UV-C 254nm mercury lamps
The X1-1-UV-3718 UV radiometer supersedes the X9-11 UV radiometer which has been the UV radiometer recommended by international organizations and institutes for many years when using germicidal UV-C radiation as a preventive measure against the nosocomial transmission of tuberculosis.

UV-3718 Irradiance Detector for UV-C low pressure mercury-vapor lamps
The model UV-3718 offers all properties and characteristics of the UV-37 Series detectors. They were specially developed for radiometric measurement tasks in the UV spectral range and have proven themselves over many years in industrial and scientific use.

The UV-3718 detector contains a photodiode with an optical band-pass filter, which is only sensitive in the effective spectral range of germicidal UV-C low-pressure mercury-vapor lamps.

To measure the irradiance, the input optic of the detector is a diffuser with a cosine field of view, which must be positioned in the desired measurement plane. The diffuser, the optical correction filter and the photodiode are pre-aged with UV radiation to significantly reduce the inevitable aging process resulting from exposure to UV radiation. The UV-3718 detector therefore shows very little aging effects even when used intensively. Changes are recorded and corrected as part of the recommended annual recalibration.

The photodiode of the UV-3718 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-V03, it offers a linear measuring range of up to at least 100 mW / cm² with a resolution of 0.001 µW / cm².