Measuring The D. O. Concentration - wtw Oxi 330i Operating Manual

Oxi 330i/340i
Switching on/off the salt
content correction

4.2.2 Measuring the D. O. concentration

Note
When measuring the concentration of test samples with a salt content
of more than 1 g/l, a salinity correction is required. For this, you have to
measure and input the salinity of the measured medium first. This is de-
scribed in section 4.3.3 E
Before measuring the oxygen, you have to switch on the salt content
correction (see below).
You can measure the oxygen content without a salt content correction
as follows:
1 Perform the preparatory activities according to section 4.2.1.
2 Immerse the D. O. probe in the test sample.
3 Press the <M> key repeatedly until the D. O. concentration in
mg/l appears on the display.
TDS UpH O
S
1 7 9 2
Time Baud
1
8 7
Day.Month No.
Year Ident
Tref25 Tref20 AutoCal DIN
LoBat nLF Lin Cal AutoCal TEC
Proceed as follows to switch on the salt content correction:
1 In the D. O. concentration measuring mode, switch on the salt
content correction with <
pears on the display. The value that was entered is taken into
consideration during the measurement (see section 4.3.3).
TDS UpH O
S
1 5 4 2
Baud
Time
8 1 7
Day.Month No.
Year Ident
Tref25 Tref20 AutoCal DIN
LoBat nLF AutoCal TEC
Lin Cal
NTERING THE SALT CONTENT
Sal
mV/pH
%
mg/l
m S/
cm
mbar M cm
1/ cm Sal
6
°
C
/
% K
TP
° F
Auto Store
ARng
AR RCL
>. The SAL display indicator ap-


Sal
mV/pH
% mg/l
m S/
cm
mbar M cm
1/ cm Sal
6
° C
/
% K
TP
° F
Auto Store
ARng
AR RCL
Operation
( ).
SALINITY
15