Irradiance Measurements
Spectral Irradiance measurements can be done in different setups and wavelength ranges, for instance with fibre optic cosine correctors or integrating spheres.
Irradiance measurements can be done in the UV, VIS as well as in the NIR range.
For absolute irradiance measurements, a spectrometer can be configured and radiometrically calibrated in the calibration laboratory with a range from 200 to 400nm or from 350-1100nm for a combined UV/VIS range of 200-1100nm, or for the 1100-2500nm range. This calibration is done on a fixed setup, i.e. fibre optics and diffusor can not be changed afterwards.
In order to be more flexible in the setup, a calibration can be performed on location with a calibrated VIS/NIR light source (AvaLight-HAL-CAL) or calibrated UV/VIS/NIR light source (AvaLight-DH-CAL).
Our comprehensive AvaSoft-IRRAD software allows you to perform and load irradiance calibrations.
A typical setup for irradiance measurements is shown in the illustration above.
Typical components used in irradiance measurements
|
|
UV Irradiance |
VIS Irradiance |
NIR Irradiance | ||
|
Spectrometer |
AvaSpec-2048 |
AvaSpec-256NIR-2.5 | |||
|
Grating UC (200-400nm), DUV, 50µm slit |
Grating VA (360-1100nm), OSC, 50µm slit |
Grating NIRY (1100-2500nm), 50µm slit, OSF-1000 | |||
|
Grating UA (200-1100nm), DUV, 50µm slit, OSC-UA | |||||
|
Software |
AvaSoft-FULL and AvaSoft-IRRAD | ||||
|
Calibration |
IRRAD-CAL-UV (200-400nm) |
IRRAD-CAL-VIS (360-1100nm) |
IRRAD-CAL-NIR (1100-2500nm) | ||
|
IRRAD-CAL-UV/VIS (200-1100nm) | |||||
|
Light source (optional) |
AvaLight-DH-CAL calibrated deuterium halogen light source with CC-UV/VIS |
AvaLight-HAL-CAL calibrated halogen light source with CC-UV/VIS |
AvaLight-HAL-CAL extra NIR calibrated halogen light source with CC-VIS/NIR | ||
|
Fibre optics |
1x FC-UV200-2, 200µm fibre, UV/VIS, 2m |
1x FC-IR200-2, 200µm fibre, VIS/NIR, 2m | |||
|
Accessories |
CC-UV/VIS cosine corrector or AvaSphere-IRRAD-CAL integrating sphere |
CC-VIS/NIR | |||
