Hach-Lange TITRALAB 840_845 Reference Manual - Manual (Page 83)

Titra Lab ® TitraLab 840 and 845 Reference Manual
Page 83
Electrode
calibration (SAC
sequence) In a calibration sequence, the standard solution beakers are handled
automatically using a sample changer. A SAC80 or SAC850 Sample
Changer must be connected and declared in the Configuration menu.
1. Install the sample changer and connect it to the SAC socket of the
Titration Manager using the cable, part no. A95A202 or A95X501.
Refer to the User’s Guide of the sample changer
(part no.: D21T013 for a SAC80, D21T085 for a SAC850).
2. If a Question mark "?" is present in the Reagent and/or Electrode
tabs, it means that the sequence needs to be programmed - a
reagent or an electrode is missing. Review programming in
Supervisor mode.
Refer to "Programming sequence", page 139 .
3. Connect the electrode system, see "Electrode connection", page
86 .
4. Press 1 Calibrate electrodes in the Electrode window.
5. Select the electrode from the list of the electrode system.
6. Press 2 Calibration sequence.
7. Prepare the electrode calibration stack, see "Electrode calibration
stack", page 85 .
8. Press Esc then 1 to run the calibration sequence. Follow the
messages on the display.
9. The sample changer cycle is initiated.
- 1 to 9 dynamic rinses (if programmed with a SAC850
- 1 to 3 static rinses (if programmed).
- Electrodes are dipped into the first standard solution.
Measurement starts.
- Between each standards (beakers), 1 to 9 dynamic rinses (if
programmed with a SAC850) then 1 to 3 static rinses are per-
formed (if programmed to do so).
10. At the end, the Titration Manager displays the calibration results.
The calibration results are saved with the electrode.
To consult the calibration results,
see "GLP-Archives menu",
page 104 .
When running a calibration sequence with a SAC80 Sample
Changer, do not use the STOP key of the SAC80.