Hach AutoCAT 9000, Instruction Manual

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Basic Operation
Basic Operation
50081_Operation.fm
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Method library— (available in Supervisor Mode) contains all of the adjustable
method parameters. Those with supervisor access can edit, reset, and delete method
parameters to suit specific needs.
•
GLP-Archives —provides access to the Good Laboratory Practice (GLP) tables, the
stored method analysis results, and global variables.
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Method Tab —is an animated icon that becomes active when a titration/calibration is
being performed.
Note: From the Methods menu, adjust the contrast of the display by pressing 7 to lighten,
and 0 to darken.
3.2.3 Titrants Menu
The Titrants menu provides access to the embedded calibration procedures, adjustable
parameters, stored calibration results, and burette functions.
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Title bar —displays Titrants
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Calibrate/Enter titrant conc. —determines the concentration of the titrant by
running a calibration or calibration sequence. Alternatively, the concentration can be
input manually on the alphanumeric keypad.
•
Install titrants —allows the user to install or replace the titrants in the selected
method.
•
Check titrants —allows the user to verify the parameters of the titrant used in the
selected method.
•
Titrant library —contains all of the adjustable calibration parameters. Supervisors
can choose to have the titrant concentration input manually or determined through
embedded calibration.
•
GLP-Archives —provides access to the Good Laboratory Practice (GLP) tables and
display the stored titrant calibration results.
•
Burette functions —allows the user to fill, empty, flush, rinse, and replace the
burette.
•
Titrants tab —displays one of four titrant status icons, see Table 1 .
3.2.3.1 Changing Titrants
The auto-flush routine takes 60 seconds and uses 10–12 mL of titrant. This function
provides a thorough flush and should be used when changing to a different titrant.
1. From the Titrant menu, press
6
to access Burette Functions.
2. Press
3
to begin the flush cycle. Allow the cycle to run to completion.
Table 1 Titrant Status Icons
Sunny Icon—the titrant calibration or manual entry of the titrant concentration has
been performed satisfactorily for the current titrant.
Cloudy Icon—either the titrant calibration should be performed within 24 hours, or
the titrant will expire in less than one week.
Stormy Icon—the titrant calibration or the titrant in the system has expired, the
calibration has failed to satisfy the user-programmed acceptance limits, or the
installed titrant and selected method are incompatible.
Question Mark—a problem exists within the method parameters for the titrant.
Supervisory level access is required.