Auto Leveling Calibration - Hach TitraLab AT1102 User Manual

7.1.3 Auto leveling calibration

11. Two options are available during the procedure:
Option Description
Stop Aborts the calibration and no results are calculated. If selected during the Replicate
Sample option, then all data in the series is lost.
Skip Stops the current operation and goes directly to the next step in the procedure.
Results are then calculated from calibration data available before Skip is selected.
Results can be less accurate using this option.
12. Push Reject or Continue.
Option Description
Reject Rejects the calibration. Select Cancel to go back to the result display or Confirm
to reject the calibration. If this is the first calibration, select Confirm to reject the
calibration and use the default or previous calibration values. If this is a Replicate
Standard calibration, select Confirm to reject only the current calibration in the
series.
Continue Select from one of these options:
• Replicate Standard: Do the calibration again using the same standard
• Save & Exit: Keep the calibration results and exit the calibration procedure
• Reject & Exit: Reject the calibration results and use the default or previous
calibration values, and exit the calibration procedure
This option is only available when at least one installed application contains an auto
leveling calibration method and the method is set to active. The calibration makes sure
that the sample volume in the measurement cell is the same before each titration.
An external pump must be installed for this procedure.
1. From the home screen, select Calibration, then push Autoleveling calibration.
2. If more than one application contains an auto leveling calibration method, push the up
and down arrow keys to highlight the application to use, then push Select.
3. Calibration information shows on the display. If necessary, select an icon for more
information or to change some data.
Option Description
Information Shows more information about the calibration.
Operator Changes the operator ID. Select from a list of applicable operators.
4. Make sure that the external pump and tubes are correctly installed (refer to
external pump on page 19).
5. Make sure that the sensor, tubes and stir bar are correctly installed in an empty
beaker, as if preparing for a standard measurement.
6. Accurately measure the necessary volume of sample and pour it into the empty
beaker.
7. Adjust the position of the tube from the external pump (refer to
so that it touches the surface of the liquid. Then add more sample until the end of the
tube is immersed in 5 to 10 mm of the liquid.
8. Push Start to start the calibration.
9. The leveling procedure starts and sample is removed for the preset time. Make sure
that this time is large enough for all the necessary sample to be removed and for air
to be removed for some seconds at the end.
Standard operations
Install an
Figure 3 on page 21)
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