User Guide

19
If the reading is within the margins (±15%),
the meter stores the value (and adjusts
the offset point). The meter will then pro-
ceed with the next calibration point.
• Press the CAL key
and the calibration
process is ended
with only the zero
of the meter cali-
brated. For a two-
point calibration do
not press the CAL
key and follow the
procedure below.
SLOPE CALIBRATION
It is suggested to perform the slope calibra-
tion in saturated air.
• Rinse the probe in a large amount of clean
water to remove any residual zero oxygen
solution.
Note: If you did not perform the zero calibra-
tion procedure, press the CAL key and
then the DOWN key to select the 100%
calibration value.
• Dry the probe tip and allow a few minutes
for the LCD readout to stabilize. The "BUF"
indicator will blink until the reading is
stable.
%
BUF
CAL
CAL