Hanna Instruments HI 2222 - Manual (Page 17)

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GLP is a set of functions that allows the storage and retrieval of data
regarding the maintenance and status of the electrode.
All data regarding the last calibration is stored for the user to review
when necessary.
EXPIRED CALIBRATION
EXPIRED CALIBRATION EXPIRED CALIBRATION EXPIRED CALIBRATION EXPIRED CALIBRATION
This instrument allow the user to set the number of days before the next
required calibration. This value can be set from 1 to 7 days. The default
setting is OFF (disabled).
The ”CAL DUE” will blink to warn the user that the instrument should
be recalibrated.
For example, if a 4 days time out has been selected, the instrument will
issue the alarm exactly 4 days after the last calibration.
If the expiration value is changed (e.g. to 5 days), then the alarm will
be immediately recalculated and appear 5 days after the last calibration.
Notes: • If the instrument was not calibrated, or if the calibration
history was deleted, the ”CAL DUE“ message will be
displayed even if this feature is disabled in the SETUP menu.
• If the instrument was calibrated using an electrode with
pin and the electrode is changed with an electrode without
pin or vice-versa ”CAL DUE” will blink. This feature helps
ensure use of a calibrated instrument.
pppppH CALIBRATION DATA H CALIBRATION DATA H CALIBRATION DATA H CALIBRATION DATA H CALIBRATION DATA
Calibration data is stored automatically after a successful calibration.
To view the pH calibration data, press the GLP key when the instrument
is in pH measuring mode.
The instrument will display the time of the last calibration.
Use the ARROW keys to scroll through the calibration data:
•
•• •• The time (hh:mm).
• •• •• The date (yyyy / mm.dd).
• •• •• The pH calibration offset.
GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP)