Descriptif technique Détecteur UV :
- Wavelength range 190 - 840 nm or 200-600nm (256 elements on CCD)
- Typical spectral half-width 8 nm ( resolution : 4nm)
- Accuracy of adjustment ± 1 nm
- Reproducibility ± 0.5 nm
- Light source Deuterium discharge lamp and halogen lamp
- Noise level at test cell (254 nm, TC 0.75 s) ± 5 x 10-5 AU
- Drift at test cell (254 nm after 1 h) 1 x 10-3 AU/hr
- Sensitivity: 2x10-5 Au
- The maximum absorbance ( saturation) is 2.5Au for the detector 200-600nm and 3 Au for the detector 190-840nm. the maximal absorbance is depended at the wavelength, so we say rather 2.5
even if we know that it can go higher.
- The lifetime of the halogen lamp is the same that the lifetime of the deuterium lamp. The warranty is the same for the 2 lamps.
Comparaison UV flash – UV analytique :
- Flash : 256 LED
- Analytique : 2048 LED (Resolution are better than Flash Detector)