Hach DR 6000, User Manual

Page: 119 / 156

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Expanded programs
6.7.3.3 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 .
The mean value is calculated from three consecutive
absorbance measurements.
The result will be displayed.
9. Compare the result with the required value from the analysis
cell.
10. Press Cancel to return to Optical Checks.
6.7.3.4 Absorbance Check
With the absorbance check the photometric accuracy and
repeatability of the device is checked.
1. Press Absorbance Check in the "Optical Checks" menu.
2. Press

to enter the wavelength.
3. Press OK to confirm.
4. Remove any cells from the cell compartment.
5. Close the cell compartment cover.
6. Press Zero .