Kipp & Zonen

SUV-A UVA Radiometer

• For monitoring of UVA irradiance
• Excellent directional response
• Accurate temperature correction
• Extremely low power consumption
• RS-485 Modbus® RTU digital output
• 0 to 1 V analog output

SUV-A UVA Radiometer

SUV-A is designed and optimized for the measurement outdoors of the UVA part of the solar radiation spectrum in the wavelength range from 315 nm to 400 nm.

The innovative quartz diffuser provides improved directional response over the CUV5 and SUV5 models and the temperature correction is more accurate. The precision glass dome is the same as used in our CMP and SMP 10, 11 and 21 pyranometers. Unlike SUV5, the SUV-A is only available with a 0 to 1 V analog signal output; there is no 4-20 mA version.

UVA typically accounts for 95% of the UV radiation that reaches the earth’s surface from a clear sky and it:
is used in tanning beds
penetrates the second layer of skin
contributes to some types of sun damage
causes  wrinkles and premature aging of the skin
passes through clouds and glass windows

SUV-A can typically measure the daily total of UVA 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.

Specifications

Spectral range (overall) 315 to 400 nm
Output range 0 to 90 W/m²
Response time (95%) 1 s
Non-linearity < 1 %
Temperature response (-40 to +70°C) < 2 %
Directional response (up to 70° with 90 W/m² beam) < 2,5 %
Supply voltage DC 5 to 30 V
Power consumption < 55 mW
Digital output 2-wire RS-485, Modbus® RTU
Analogue output 0 to 1 V

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