Xylem handylab OX 12 - Manual (Page 19)

handylab Ox 12 Operation
19 ba75369e04 01/2011
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 described in sec-
tion 4.3.3 E
NTERING THE SALT CONTENT ( SALINITY ).
Before measuring the oxygen, you have to switch on the salt content correc-
tion (see below).
You can measure the oxygen content without a salt content correction as fol-
lows:
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. probe in the test sample.
3 Press the <M> key repeatedly until the D. O. concentration in mg/l
appears on the display.
ARng
%
LoBat Cal AR
8
° F
Sal
mbar
S 1
RCL
Auto Store
1/cm
/ K %
TDS UpH Sal
mV/pH
S/ m cm
cm M
Lin
Tref25 Tref20
nLF
AutoCal DIN
AutoCal TEC
Time Baud
Day.Month No.
Ident Year
6 7 1
9 2 7
O
° C
mg/l
TP
1 In the D. O. concentration measuring mode, switch on the salt con-
tent correction with <
▲>. The SAL display indicator appears on the
display. The value that was entered is taken into consideration during
the measurement (see section 4.3.3).
cm
cm M
%
LoBat Cal AR
8
° F
mbar
S 1
RCL
Auto Store
1/cm
/ K %
TDS UpH Sal
mV/pH
S/ m
Lin
Tref25 Tref20
nLF
AutoCal DIN
AutoCal TEC
Time Baud
Day.Month No.
Ident Year
6 7 1
4 2 5
O
° C
mg/l
ARng
TP
Sal