Hanna Instruments HI 84529-01 - Manual (Page 28)

www. hannainst .com 28 Operational Guide
If the computed slope isn’t within the
preset limits, the meter will display the
message “Wrong Slope”. If the slope is too
high the
symbol will be displayed. If
the slope is too low the symbol will
be displayed.
If the “Wrong Old Slope” error message
is displayed, an inconsistency exists
between the current and the previous
(old) calibration. Clear the previous
calibration by pressing CLEAR and
proceed with calibration from the current
calibration point. The instrument will
keep all the confi rmed values during the
current calibration.
If the temperature reading is out of
the defi ned temperature range of the
buff er (0 to 45 °C), the “Wrong Buff er
Temperature” error message will be
displayed, and the temperature symbol
will blink on the display. Calibration
cannot be confi rmed in this situation.
Electrode
Calibration
Procedure