Hach-Lange DR 6000 User Manual - Manual (Page 120)

120
Expanded programs
6.7.3.3 Wavelength check
The Wavelength Check test is used to check wavelength
accuracy at 656.1 nm and 486.0 nm. The bandwidth is checked
at 656.1 nm.
1. Select Wavelength Check from the "Optical Checks" menu.
2. Press λ to select the wavelength.
3. Press OK to confirm.
4. Press Start.
Note: During the UV lamp warm-up phase, the text "Lamp
Warmup"is shown.
The result is shown.
5. Press Cancel to go back to the Optical Checks.
6.7.3.4 Stray Light Check
With the stray light check, the stray light in the device is
measured at 340 nm.
1. Press Stray Light Check in the "Optical Checks" menu.
2. Remove any present cells from the cell compartment.
3. Insert the universal cell adapter for 10-mm rectangular cells
into the cell compartment (2).
4. Close the cell compartment cover.
5. Press Zero.
6. Insert the analysis cell into the cell compartment (2).
7. Close the cell compartment cover.
8. Press Start.