Hanna Instruments Edge - pH Calibration Messages and GLP

Operational Guide
39
The Calibration Check™ feature may ag diagnostic messages during a
calibration. As electrode aging is normally a slow process, substantial changes
from previous calibrations are likely due to a temporary problem with the
electrode or buers that can be addressed easily. These messages are seen
in Standard and Basic modes.
Wrong Buer
This message appears when the dierence between
the pH reading and the value of the selected buer
is too great. If this error message is displayed, check
if you have selected the proper calibration buer
and have poured the desired buer.
Wrong-Old Points Inconsistency
This message is displayed if the new calibration
diers signicantly from the last value of that
sensor in that buer. In this case it may be best to
clear the previous calibration and attempt a new
calibration with fresh buers.
Press CAL then press CLR. “CLEAR CALIBRATION”
will be displayed. Press CAL to exit calibration if you
want to keep old calibration data instead of clearing.
Press the CFM key. “CLEAR ALL” will be displayed
followed by “CAL DUE”.
Calibration
Messages