Xylem MULTI 1970I PORTABLE MULTIPARAMETER METERS - Manual (Page 31)

Multi 1970i Operation
29
4.4.2 Measuring the D. O. concentration
When measuring the concentration of test samples with a salt content
of more than 1 g/l, a salinity correction is required.
Note
How to enter the current salt content is described in
section 4.4.6 E
NTERING THE SALT CONTENT ( SALINITY ) on page 35.
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 4.4.1.
2 Immerse the D. O. sensor in the test sample.
3 Press the <
▲> <▼> key repeatedly until the D. O. concentra-
tion in mg/l appears on the display.
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
REL1
O
ARng
mg/ l
1 Perform the preparatory activities according to section 4.4.1.
2 Immerse the D. O. sensor in the test sample.
3 While pressing the <RUN/ENTER> key, switch on the salt con-
tent correction with <
▲> . The SAL display indicator appears
on the display. The specified salt content is taken into consid-
eration during the measurement.