User Guide

23
• When the “CFM” indicator starts blinking,
the calibration can be confirmed. Press the
ALT and CFM keys simultaneously to con-
firm the first buffer.
• If everything is satisfactory
the secondary LCD will
show “4.01” expecting the
second buffer at pH 4.01.
• If the buffer is out of the
offset range, "WRONG "
as error message will blink.
Note: If a single point calibration is re-
quired, press ALT and CAL keys to leave
the calibration mode. However, it is always
better to proceeds as follows for a two or
three point calibration.
• “4.01” can be changed to “10.01” or
“9.18” by pressing the CAL key.
CFM
ALT CFM
CAL
2
pH
BUF
WRONG
BUF
ALT
CAL
CAL