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SPECTRAL RESPONSESOF THE UV SENSORS
LOGARITHMIC SPECTRAL RESPONSE

UVS series; Kipp & Zonen UV radiometer range - 9079 The 3 spectral responses are carefully adapted to the respective measurement application. They are generated by sequences of colored glass layers and fluorescent phosphors, followed by a matching semiconductor photon detector. The Graphs on this page show the spectral responses in different representations. Precision manufacturing according to ISO 9001:2000 and individual spectroradiometric calibrations ensure a high degree of reproducibility and comparability from unit to unit. The calibrations are linked to other calibration references through Kipp&Zonen's international cooperation in projects to establish world-wide UV radiation standards.

All the UVS spectral responses compared to erythemal action spectrum on a logarithmic scale.
SOLAR SPECTRAL CONTRIBUTION LINEAR SPECTRAL RESPONSE Spectral contributions equivalent to the UV Sensor outputs, The curves are obtained by convolution of the UV Sensor responses with the reference solar calibration spectrum (0º zenith angle, 0.32cm ozone column). CALIBRATION

The spectral distribution of atmospheric UV irradiance is very variable, mainly depending on sun elevation and stratospheric ozone. During the calibration of the UVS Radiometers this variability is taken into account by systematic convolution of the spectral response function with observed and modelled atmospheric UV spectra. For the calibration of the reference UVS Radiometers the sun is the UV radiation source and a Brewer MKIII Spectrophotometer is used to measure the spectral irradiance. The calibration measurement reports are enclosed with every UV-S Radiometer. Due to this extended calibration method the highest possible measurement accuracy is achieved by applying corrections for the air mass and ozone column at the time and location of the measurement.

SOLAR & ATMOSPHERIC SCIENCE
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