wtw Oxi 3300i Instrucciones De Operación página 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:
Keep the OxiCal
Connect the D. O. probe to the measuring instrument.
Put the D. O. probe into the air calibration vessel.
Press the <CAL> key repeatedly until O
C
TP
Press <RUN/ENTER>. The AutoRead measurement begins.
If the measured value is stable, the instrument displays the value of the
relative slope and the sensor evaluation.
Switch to the measuring mode with <M>.
°
C
TP
AR
Procedure for calibrating via a comparison measurement:
Connect the D. O. probe to the measuring instrument.
Press the <CAL> key repeatedly until O
Immerse the oxygen sensor in the calibrating solution.
C
TP
Press <RUN/ENTER>. The AutoRead measurement begins.
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).
Remove the oxygen sensor from the calibrating solution.
Perform a comparison measurement (determine the nominal value).
AR
Leave the measuring instrument switched on until the nominal value is
determined.
Set the displayed value on the measuring instrument to the nominal val-
ue with <L> <M>. This changes the related correction factor of the rela-
tive slope.
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.
Oxi 3300i/3400i
CAL appears.
2
FAC appears.
2