Hach-Lange DR 3900 User Manual - Manual (Page 22)

22
Installation
3.7 Beam path
Figure 7 shows the beam path of the DR 3900.
Figure 7 Beam path
1 Halogen lamp 8 Splitter mirror
2 Entrance slit 9 Reference element
3 Grating 10 Cell compartment (2) for rectangular cells
4 Grating angle indicator 11 Lens
5 Exit slit 12 Reading element
6 Lens 13 Cell compartment (1) for round cells
7 Filter wheel