Measuring
Oxi 330i/340i
6
Measuring
Overview of the measuring modes:
Special functions:
AutoRead
(drift control)
The AutoRead function checks the stability of the measurement signal (ex-
cept for the measurement of the ORP voltage). Activate AutoRead with
<AR>. Press <RUN/ENTER> to start the AutoRead measurement. During
the AutoRead measurement, AR flashes on the display until a stable mea-
sured value is reached. This can be terminated at any time taking over the
current measured value with
<RUN/ENTER>.
Temperature
measurement
The measuring instrument automatically measures the temperature of the
sample with the integrated temperature sensor of the conductivity measuring
cell (display TP).
AutoRange
measuring range
selection
There are several measuring ranges available for oxygen measurements.
If a measuring range is exceeded, AutoRange causes the measuring instru-
ment to change automatically to the next measuring range. To switch the au-
tomatic measurement range selection on/off, see C
ONFIGURING
. When the
AutoRange function is switched on, ARng appears on the display.
Salinity
correction
A salinity correction is required in the oxygen concentration measurement of
samples with a salt content of more than 1 g/l. To do so, press the <CAL>
key repeatedly until Sal appears on the display. Then, enter the salinity with
<
▲
> <
▼
>. Then change to the oxygen concentration measuring mode with
<M>.
Switch on the salinity correction with <
▲
> (display SAL). To switch it off,
press <
▼
>.
<M>
<M>
<M>
Oxygen
concentration
Oxygen
saturation
Oxygen
partial pres-
sure mbar
mg/l
%
