GENEQ > Meteorology > Radiometers

Dual Band UV Radiometer
Model UV-S-AB-T

Dual band sensor for precise measurements of atmospheric UV-A and UV-B irradiance.
UV-S Series
The UVS Radiometers form a unique set of instruments for accurate measurements of solar ultraviolet radiation in the atmosphere. The UV Radiometers have sealed, weather resistant cases made from protected aluminium. They permit continuous outdoor operation. The Radiometers can easily be adjusted in the horizontal by help of three leveling screws and the built-in circular bubble level.
The UV Radiometers are available either with thermoelectric temperature stabilization (suffix T) or with an integral electronic temperature compensation (suffix C).
While the temperature stabilization provides highest accuracy, the temperature compensation may be required when the available power is limited. In both cases, a single DC supply voltage is needed for operation.
Features
  • Spectral sensitivities precisely adapted to the measurement task
  • Very good cosine response: ±2.5 % between 0 º and 70 º zenith angle
  • Excellent long-term stability
  • Internal thermostatting at 25 ºC
  • two separate analog voltage outputs for each band
Description

The UV-S-AB-T measures UV-A irradiance and UV-B irradiance.

The dual band UV-S-AB-T measures the irradiance in two spectral bands with a single sensor providing separate outputs for each band (only available as internal thermostated T-version).

The dual band UV-S-AB-T has two separate analog voltage outputs for each band. The UV-S-AB-T is only available as T-version (Internal thermostatting at 25 ºC) and have, as with the single band models, a control output for the internal temperature.

Specification
Spectral Response
UV-B + UV-B
Sensitivity (nominal) of 1 V output corresponds to Each output the same as single band sensors
Temperature depedence Not Applicable
Response Time (99%)
0.5 s
Non-stability (% change / year) max 3 %
Non-linearity (over full measurement range) ±0.05 %
Contribution at wavelengths >400 nm <0.1 % of output
Expected accuracy for daily sums max 5 %
Cosine response error ±2.5 % (between 0º and 70º zenith angle)