Hach-Lange DR 2800 eco - Manual (Page 99)

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Advanced Operations
Time & Interval:
1. Press Time & Interval in the ”Options“ menu.
2. Input the total time and the reading time and confirm with OK.
Note: In total 500 measuring steps are possible. If you select a total time
and a time interval that would cause this number of measurements to be
exceeded, the time interval is defined automatically and the OK key is
inactivated.
Scale & Units:
1. Press Scale & Units in the ”Options“ menu.
2. Activate Abs or %T as the required units.
3. Activate Auto or Manual scaling on the graph´s y-axis.
Note: If you select manual scaling, you can use the alphanumeric keypad
to set the limits y
min.
and y
max.
. The graph is adjusted to display only the
values in the selected range. If you select automatic scaling, the instrument
sets the limits automatically so that the total range can be displayed.
4. Press OK to confirm.
5. Press Return to return to the scan mode.
6.5.2 Time Course Scan Reading
After the parameters have been selected, the instrument must be
blanked, then the sample can be analyzed.
1. Insert the blank cuvette into the cell holder. Press Zero. The
blank reading is shown on the display.
2. Insert the sample cuvette into the cell holder. Press Read. Start
collecting time course (kinetic) data.
Note: During the measurement the Zero and Read keys change to Mark
and Stop .