Hanna Instruments HI 2002, Instruction Manual, Page: 35 / 52

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If calibration has not been performed, the instrument displays a
blinking “NO CAL” message.
After the calibration has been performed the instrument displays offset
and slope. The GLP slope is the average of the calibration slopes; the
percentage is referenced to the ideal slope value at 25 ºC. Additionally
the condition and response indicators displayed are from the last
calibration.
Pressing the keys, the last calibration date (yyyy.mm.dd)
together with the current reading is displayed.
Note: If a custom buffer was used in calibration, the “C1” and “C2” tags will be displayed.
If only the one custom buffer is used in calibration, the tag will be “C1” and the value will
be displayed.
If disabled, “EXPIRATION WARNING DISABLED” is displayed.
Or if enabled the number of days until the calibration alarm “CAL
DUE” will be displayed. (i.e. “CAL EXPIRES IN 2 DAYS”)
The number of days since the calibration expired. (I.E. “CAL EXPIRED
2 DAYS AGO”).
The probe serial number together with the current reading.
OPERA
TIONAL GUIDE