wtw Oxi 330i Mode D'emploi page 8

Calibration procedure:
O
C A L
1 7 6
°
Cal
O
S
0 8 8
1
7 6
Cal
O
F A C
1 7 6
°
Cal
O
mg/l
4 4 2
0
1 0 7
ARng
Cal
8
Procedure for calibrating with the air calibration vessel OxiCal®-SL:
l Keep the OxiCal
l Connect the D. O. probe to the measuring instrument.
l Put the D. O. probe into the air calibration vessel.
l Press the <CAL> key repeatedly until O
C
TP
l Press <RUN/ENTER>. The AutoRead measurement begins.
l If the measured value is stable, the instrument displays the value of the
relative slope and the sensor evaluation.
l Switch to the measuring mode with <M>.
°
C
TP
AR
Procedure for calibrating via a comparison measurement:
l Connect the D. O. probe to the measuring instrument.
l Press the <CAL> key repeatedly until O
l Immerse the oxygen sensor in the calibrating solution.
C
TP
l Press <RUN/ENTER>. The AutoRead measurement begins.
l When the measured value is stable, the instrument displays the deter-
mined measured value and the correction factor of the relative slope (ini-
tial value = 1.000).
l Remove the oxygen sensor from the calibrating solution.
l Perform a comparison measurement (determine the nominal value).
AR
Leave the measuring instrument switched on until the nominal value is
determined.
l Set the displayed value on the measuring instrument to the nominal val-
ue with < > < >. This changes the related correction factor of the rela-
tive slope.
l Switch to the measuring mode with <M>.
Note
If the correction factor deviates from 1.000, the display of the measured value
units flashes.
®
-SL air calibration vessel ready.
CAL appears.
2
FAC appears.
2
Oxi 330i/340i