User Guide

18
calibration point.
• If the buffer is out of the slope range, "E2"
as error message will appear on the sec-
ondary display. Press the CAL key and
recalibrate the value.
• If you cannot complete the calibration,
check your electrode by following the con-
ditioning and maintenance procedure on
page 28 and repeat the calibration proce-
dure from the beginning with fresh buffers.
The pH electrode might have to be replaced
if calibration cannot be successfully per-
formed.
During calibration, the characteristics of the
electrode will be memorized.
After calibration this data can
be checked by pressing the
FACTOR key (see operational
guide on page 10).
This operation will display:
• date
• time
• the offset characteristic of
the electrode in pH units
• the slope 1
st
in %
• the slope 2
nd
in %.
%
%
pH
TIME
DATE
CFM
CAL
FACTOR