Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 27

No. Component
1 Tungsten lamp
2 Mirror (VIS)
3 Deuterium lamp
4 Mirror
5 Filter wheel
6 Entrance slit
7 Mirror
8 Optical grating
9 Mirror
10 Reference mirror
11 Reference detector
12 Flow cell
13 Detector
Operating Instructions
VWD-3100 and VWD-3400RS Variable Wavelength Detectors
Fig. 1: Optics setup
Description
Light source for the visible and near-infrared wavelengths (345 nm -
900 nm)
Focuses the light from the tungsten lamp to the through hole (aperture) of
the deuterium lamp.
Light source for the UV wavelengths (190 nm - 670 nm)
Focuses the combined light of both lamps to the entrance slit.
Fitted with the optical filters to suppress higher-order radiation and verify
the wavelength accuracy.
Limits the bandwidth of the light that is directed to the flow cell.
Directs the light to the optical grating.
Grating (1800 l/mm)
Directs the diffracted, monochromatic light from the grating to the flow
cell.
The reference mirror is installed in front of the flow cell. It directs part of
the light beam to the reference detector
Provides a reference signal that compensates for fluctuations in the
intensity in the light source.
The eluent with the analyte travels through the flow cell. The
measurement beam travels through the flow cell to the detector.
Measures the light intensity of the measurement beam after absorbance
though the sample.
UltiMate 3000 Series:
Page 19