Kritech & Co PGmbH

Important features : For monitoring of UVE irradiance and UV Index Excellent directional response Accurate temperature correction Extremely low power consumption RS-485 serial communication using Modbus® RTU protocol 0 - 1 V analogue output 5 year warranty

SUV-E is designed and optimized for the measurement outdoors of solar radiation with the same response as a ‘standard’ human skin for susceptibility to damage from sunburn.

This ‘Erythemal’ response is defined by ISO/CIE 17166:2019. From the value of ‘Erythemal’ UV irradiance the Global Solar UV Index can be simply calculated.

UV Index = UVE (W/m²) x 40 m²/W. For example: 0,3 W/m² of UVE irradiance is equivalent to UV Index 12.

The innovative quartz diffuser provides improved directional response over the CUV 5 and SUV 5 models and the temperature correction is more accurate. The precision quartz dome is the same as used in our CMP and SMP 22 pyranometers. Unlike SUV 5, the SUV-E is only available with a 0 - 1 V analog signal output; there is no 4 - 20 mA version.

UVE is typically made up of about 17% UVA and 83% UVB for a clear sky around solar noon and it:
      - is strongly affected by the concentration of ozone high in the atmosphere, ‘holes in the ozone layer’
      - is considered a strong risk factor for skin cancers and cataracts
      - is found in man-made sources of UVC radiation (mercury lamps, welding torches)
      - is used to calculate the UV Index for public health information

SUV-E can typically measure the daily total of UVE irradiance with an uncertainty of 5%.

A data file is supplied with the individually measured spectral response and a matrix of correction factors for variations in the solar zenith angle (air mass) and the atmospheric total ozone column. These can be used to reduce the measurement uncertainty.

SmartExplorer Windows™ software for data logging, display of data and Modbus® address setting, can be downloaded from the Kipp & Zonen / Ott HydroMet webpage.

Specifications