User Guide

85
LAST CALIBRATION DATA
If the meter is set as pH controller, the following data about
the last calibration are stored in the EEPROM:
• Date
• time
• offset, in mV
• slope, in mV/pH
• up to two buffers.
If the meter is set as ORP controller, the data stored in the
EEPROM are the following:
• Date
• time
• first calibration point
• second calibration point.
While displaying these data the pH/ORP controller remains
in control mode.
To enter the last calibration data
mode, press the CAL DATA key.
If the meter has never been calibrated
or an EEPROM reset has occurred, no
calibration data is shown when CAL
DATA is pressed. The “no CAL” mes-
sage will blink for a few seconds, then
the meter skips back to the previous
mode.
If the meter is set as pH controller, once entered the last cali-
bration data, the following messages could scroll twice on
the primary LCD before showing the calibration date:
• “Old probe”
• “Dead probe”
• “Probe needs calibration”.
Otherwise the last calibration date will
appear on the primary LCD displayed
as DD.MM format, while the second-
ary display will show the last two digit
of the year.