S 4345/ S 4350 PDA Detector
The S 4345/ S 4350 photodiode-array (PDA) detector is for routine analysis and sophisticated research. The dual lamp design offers a wavelength range of 190 – 720 nm (256 Diodes) or 190 – 1015 nm (1024 diodes) with a low baseline noise. The front-accessible flowcell can be easily exchanged as well as the lamps which are accessible through a side panel in the instrument housing.
- 4-Channel UV Detector
- Integrated Peak Detector
- Optional – Analog Output
4-Channel UV Detector
The S 4345/ S 4350 PDA Detector features 4-Wavelength channels to measure chromatograms at 4 different wavelengths at the same time. With this feature the optimum wavelength can be selected for each analyzed substance.
Integrated Peak Detector
The integrated Peak Detector works as a basic fraction collector. The peak detection level can be freely programmed for peak start and peak end to enhance the collection purity. An integrated 24V output for switching a solenoid valve is used for the fraction collection, which is automatically operated with a selectable time delay.
Optional – Analog Output
The S 4345/ S 4350 PDA Detector is available with an optional 4-Channel analog output. This D/A converter output option is offered to keep the system flexible to be used with any data acquisition software available.
|Wetted Materials||Stainless Steel / PEEK*, Teflon, Glass|
|Baseline Noise||± 1 x 10-5 AU (@240 nm, 1 sec. Risetime)|
|Baseline Drift||< 3 x 10-4 AU/h|
|Number of Diodes||256 or 1024|
|Wavelength Range||190 – 720 nm (256 Diodes)|
190 – 1015 nm (1024 Diodes)
|Wavelength Accuracy||0.5 nm (256 Diodes)|
0.3 nm (1024 Diodes)
|Mean Pixel Pitch||2.2 nm (256 Diodes)|
0.8 nm (1024 Diodes)
|Resolution (λ FWHM)||7 nm (256 Diodes)|
3 nm (1024 Diodes)
|Linearity||> 2.0 AU|
|Light Source||Deuterium Lamp, Tungsten Lamp|
|Wavelength Program||Programmable, 10 steps|
|Analog Output||1x 1V (optional: 4x 1V)|
|Data Rate||1 Hz – 100 Hz|
|Control Features||Internal Peak Detector with +24 V solenoid switching output|
|Dimensions (W x H x D)||310 x 165 x 478 mm (S 4345)|
396 x 165 x 478 mm (S 4350)
|Power Supply||100 – 250 ~V (47 – 63 Hz)|