Oxi 197i
Operation
17
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 on page 27.
Switching the salt content correction on or off, see below.
To measure the D. O. concentration with and without salt content cor-
rection, proceed as follows:
Switching on/off the salt
content correction
Proceed as follows to switch on the salt content correction:
1
Perform the preparatory activities according to section 4.2.1.
2
Immerse the D. O. sensor in the test sample.
3
Press the
<M>
key repeatedly until the D. O. concentration in
mg/l
appears on the display.
REL1
Sal
S
pH
AR
1
LoBat
nLF
Lin
Oxi
Tref25
Tref20
Cal
TEC
Auto
Store
8
Time
Year
Ident
No.
Day.Month
Baud
Sal
cm
1/
K
/
%
RCL
REL2
pH
/
mV
m
cm
S/
%
7
1 7 6
9 2
°
C
TP
O
ARng
mg/ l
1
In the D. O. concentration measuring mode, switch on the salt
content correction with
<
▲
>
. The
SAL
display indicator ap-
pears on the display. The value that was entered is taken into
consideration during the measurement (see section 4.3.3).
2
Switch the salt content correction off with
<
▼
>
. The SAL dis-
play indicator is no longer displayed.
REL1
Sal
S
pH
AR
1
LoBat
nLF
Lin
Oxi
Tref25
Tref20
Cal
TEC
Auto
Store
8
Time
Year
Ident
No.
Day.Month
Baud
cm
1/
K
/
%
RCL
REL2
pH
/
mV
m
cm
S/
%
5
1 7 6
4 2
°
C
TP
O
ARng
mg/ l
Sal
Summary of Contents for Oxi 197i
Page 46: ...Operation Oxi 197i 46 ...
Page 52: ...What to do if Oxi 197i 52 ...
Page 56: ...Technical data Oxi 197i 56 ...
Page 62: ...Index Oxi 197i 62 ...