wtw 330i Operating Manual page 26

Operation
26
TDS UpH pH O
S
1 1 7 7
Time Baud
0 2 4
Day.Month No.
Year
Ident
Tref20
Tref25 AutoCal DIN
LoBat nLF Lin Cal AutoCal TEC
5 When the measured value is stable, Cd2 appears.
Note
At this point, the AutoCal DIN calibration can be terminated with <M>.
This corresponds to a single-point calibration. For this, the instru-
ment uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the
asymmetry of the electrode.
ISE U pH
S
6 C d
1
Time Baud
8 2 4
Day.Month No.
Year Ident
AutoCal DIN Auto Store
LoBat
AutoCal TEC ConCal
6 To continue the two-point calibration, thoroughly rinse the
electrode with deionized water.
7 If necessary, enter the temperature of the second buffer solu-
tion with < > < >.
8 Immerse the pH electrode in the second buffer solution.
9 Press the <RUN/ENTER> key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value ap-
pears on the display. Example:
Sal
mV mV/pH
S
% mg/l
1
m S/
cm
mbar M cm
1/ cm Sal
Time
8
°
C
Day.Month No.
/
% K
TP
° F
Year
Auto
Store Tref25
ARng
AR AR RCL LoBat nLF
mol/L
2
mV/pH
% ppm
mg/L
°F
8
%
TP
°C
CalError TempError
ARng AR RCL
pH 330i/340i
TDS UpH pH O Sal
mV/pH
% mg/l
4 0 1
m S/
mbar M
1/ cm
Baud
0 2 4 8
°
C
° F
Ident
Tref20 Auto
AutoCal DIN Store
ARng
Lin Cal AutoCal TEC
cm
cm
Sal
/
% K
TP
AR AR RCL