User Guide

• If an offset calibration has been

made, the instrument will turn to

“slope” calibration (as indicated by

the “SLO” message on the second-

ary display. The slope value is shown

on the primary LCD and the first digit

is blinking to permit modifications).

• Press the  or  key to modify the value or  key to move

to the next digit.

• Once selected the desired value, press CFM to confirm.

• After confirmation the instrument will turn back to normal

mode.

• If the slope is invalid, the ”WRONG” indicator will blink

on the LCD.

Note Press LCD or CAL DATA key to exit calibration. The slope will

be set to the default value (57.5 mV/pH).

Note After direct selection of offset and slope, calibration data can

be viewed by pressing the CAL DATA key while in normal

mode, but no pH-buffer values will be displayed during the

data scrolling on the LCD.