Tds (Total Dissolved Solids) - wtw Cond 1970i Operating Manual

Cond 1970i
ba75692e02 07/2009

4.2.4 TDS (Total dissolved solids)

You can measure the total dissolved solids as follows:
1 Perform the preparatory activities according to section 4.2.1.
2 Immerse the conductivity measuring cell in the test sample.
3 Press the <M> key until the unit mg/l appears.
The value of the total dissolved solids appears in the upper dis-
play line. The TDS factor appears in the lower display line.
pH
S
C 4 7
O
Sal
Time Baud 0 1 0 0
Day.Month No.
Year Ident
Tref25 Tref20 Auto Store
LoBat nLF Lin Oxi Cal TEC
4 Using <▲> <▼>, set the TDS factor (0.40 ... 1.00).
(The TDS factor has to be determined by a comparative mea-
surement before.)
pH S
3 9
C
O
Sal
Time Baud 0 0 8 2
Day.Month No.
Year Ident
Tref25 Tref20 Auto Store
LoBat nLF Lin Oxi Cal TEC
5 Wait for a stable measured value.
mV / pH
4
% mg/l
S/
m
cm
1/ Sal
cm
C
°
/
% K
TP
REL1 REL2
ARng AR RCL
mV / pH
8
% mg/l
S/
m
cm
1/ cm Sal
C
°
/ K
%
TP
REL1 REL2
ARng AR RCL
Operation
19