52
Two standard entry types are available: ManualSelection and Custom Standard. The default option is Manual Selection.
A. To calibrate the instrument using
Manual Selection
standard entry type:
• Press . If the instrument was calibrated before and calibration was not cleared, the old calibration can be
cleared by pressing . After 10 seconds, will no longer be available.
Note: It is very important to clear calibration history when a new electrode is used
because most errors and warning messages that appear during calibration
depend on calibration history.
• Add ISAB to all standard solutions.
• Immerse the Ion Selective Electrode and the temperature probe approximately 4 cm
(1½”) into the less concentrated standard solution and stir gently.
• Select the used standard solution concentration with or . The “Please wait...” message
will appear on the LCD until the reading is stable or the concentration is validated.
Note: When in ATC mode, if pressing a pop-up menu will be displayed on the LCD in which the
concentration value can be adjusted using or . Press to save the new
concentration value.
• If the standard solution concentration is validated, will appear on the LCD. Press to update
calibration. The calibration point value will be added to the Calibrated Standards list.
• The “Please wait...” message will appear on the LCD for 10 seconds and until the reading is stable, time in
which immerse the ion selective electrode and the temperature probe into the next standard solution and
follow the above procedure or press to exit calibration.
B. To calibrate the instrument using
Custom Standard
entry type:
• Press . If the instrument was calibrated before and calibration was not cleared, the old
calibration can be cleared by pressing . After 10 seconds, will no longer be available.
Note: It is very important to clear calibration history when a new electrode is
used because most errors and warning messages that appear during
calibration depend on calibration history.
• Add ISAB to all standard solutions.
• Immerse the Ion Selective Electrode and the temperature probe approximately 4
cm (1½”) into the less concentrated standard solution and stir gently.
• When the stability condition is reached and 10 seconds elapsed, a pop-up menu will appear on the LCD
in which the standard concentration value can be set.
• Press
/ to select next/previous entry to be edit. Press and use or
to set the desired value. Press to save the modified value and then press
to store the set concentration value.
65
Load Profile
To load one profile:
• Use or to select the
Profile
option.
• Press
and use or to highlight the
Load Profile
option.
• Press
.
A list with all customised profiles will be displayed
on the screen.
• Use or to select the desired profile and press
to
confirm or
to exit without selecting.
Save Current Profile
To save the current profile:
• Use or to select the
Profile
option.
• Press and then select
Save Current Profile
option. The
Text Editor
box will be displayed on the LCD.
• Enter the desired profile name by using and
to highlight the desired character and then press to add it to
the text bar. It is also possible to delete the last character by positioning
the cursor on the Backspace character ( ) and pressing .
• Press to return to the Profile options.
Note: The saved profile will automatically become the current profile.
(64 paginas)
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