wtw pH 3300i, Operating Manual

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pH 3300i/3400i Operation
25 ba75682e02 03/2008
4.3.2 AutoCal DIN
For this procedure, use two or three different standard buffer solutions ac-
cording to DIN 19266 in ascending or descending order (type A, C, D or F
with pH values at 25 °C of: 1.679 / 4.006 / 6.865 / 9.180).
Note
The buffer solutions are automatically recognized by the measuring instru-
ment. Depending on the instrument setting (see section 4.6 C
ONFIGURATION
),
the instrument displays the relevant buffer nominal value or the current elec-
trode voltage in mV.
Note
Skip the steps 2, 7 and 14 if you use a temperature sensor.
1 Press the <CAL> key repeatedly until the display Cd1 and the func-
tion display AutoCal DIN appear. The sensor symbol displays the
evaluation of the last calibration (or no sensor symbol in the delivery
state or after the measurement parameter has been reset).
2 If necessary, enter the temperature of the buffer solution with <
▲
>
<
▼
> .
3 Immerse the pH electrode in the first buffer solution.
4 Press the <RUN/ENTER> key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value appears on
the display. Example:
AutoCal TEC
6
mV/pH
mol/L
8
Auto Store
RCL
LoBat
CalError
ARng AR
ConCal
Time Baud
Day.Month No.
Ident Year
1
U
%
°F
S
TempError
mg/L
% ppm
ISE
8 4 2
1 C d
°C
TP
pH
AutoCal DIN