Hach-Lange LICO 690 User Manual - Manual (Page 76)

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Standard programs
5.7.2.2 Complete a reading in the Multi Wavelength mode
1. Insert the zero solution cell into the cell compartment.
2. Press Zero.
Note: The Read key does not become active until the zero reading
has been completed.
3. Insert the analysis cell into the cell compartment.
4. Press Read.
5. For data storage, refer to section 5.3.1, page 38 .
5.7.3 Time course of absorbance/transmittance
The Time Course mode is used to collect data in either
absorbance or transmittance for a user-specified length of time.
This data can be displayed in either a graph or a table.
5.7.3.1 Time course setup parameters
1. In the main menu, press the Time Course menu option.
2. Press Options to configure parameters.
Table 9 Time course options
Options Description
More For further Options
Save icon
Symbol: Store Data, if Instrument Setup > Data Log Setup > Auto Store: Off is selected.
Symbol: Recall Data, if Instrument Setup > Data Log Setup > Auto Store: On is selected.
Time & Interval
To input the total time for data collection and the time interval between the collection of data
points.
 To input the wavelength setting.
View Table
To display readings in absorbance, transmittance or concentration. This can be changed after
sample data is collected
Scale & Units
Scale: In the automatic Scaling mode, the y-axis is automatically adjusted so that the total scan
is displayed.
The manual Scaling mode allows sections of the scan to be displayed.
Units: Choice of absorbance or transmittance.