Xylem handylab pH 12 - Manual (Page 23)

handylab pH 12 Operation
23 ba75368e04 01/2011
4.3.1 AutoCal TEC
For this procedure, use any two or three technical buffer solutions in ascend-
ing or descending order
(pH values at 25 °C: 2.00 / 4.01 / 7.00 / 10.01).
Note
The calibration for pH 10.01 is optimized for the SI Analytics technical buffer
solution pH 10.01. Other buffer solutions can lead to an erroneous calibra-
tion. The correct buffer solutions are given in the SI Analytics catalog or in the
Internet.
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 Ct1 display indicator
and the function display AutoCal TEC appears. 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 first 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 ap-
pears on the display. Example:
6
mV/pH
mol/L
8
Auto Store
RCL
LoBat
AutoCal DIN 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 t
°C TP
pH
AutoCal TEC