Xylem handylab pH LF 12 - Manual (Page 29)

handylab pH/LF 12 Operation
29 ba75370e03 11/2009
4.3.2 AutoCal DIN
For this procedure, use two different standard buffer solutions according to
DIN 19266 (type A, C, D or F with pH values at 25 °C of: 1.679 / 4.006 / 6.865
/ 9.180).
Note
Skip the steps 2 and 7 if you use a pH electrode with a temperature probe or
the temperature probe of a conductivity measuring cell.
1 Press the key repeatedly until the display Cd1 and the
function display AutoCal DIN appear. The sensor symbol dis-
plays the evaluation of the last calibration (or no sensor symbol
in the delivery state or after the measurement parameter has
been reset).
2 If required, enter the temperature of the first buffer solution with
<
▲> <▼> while keeping the key depressed.
3 Immerse the pH electrode in the first buffer solution.
4 Press the key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value ap-
pears on the display. Example:
5 When the measured value is stable, Cd2 appears.
AutoCal TEC
/pH mV
TDS O U
Tref20
Cal
8
S 1
Sal
% mg/l
1/cmSal
Lin
Tref25
nLF RCL
Auto Store
LoBat ARng AR
Time Baud
Day.Month No.
Ident Year
mbar cm M
° F
/ K %
S/ m cm
8 4 2
d 1
° C
TP
pH
C
AutoCal DIN
AutoCal TEC AutoCal TEC
° F
0
Cal
Tref20
Lin
0
Cal
Tref25
ARng
Tref25 Auto
ARng
Tref20
Lin
F
cm 1/ 1/cm
AR AR RCL RCL
O O UpH UpH Sal Sal
Store Store Auto
LoBat LoBat nLF nLF
Sal Sal
% % mg/l mg/l
mV/pH mV/pH
cm cm
°
m m S/ S/ cm cm
% % / / K K
M M
TDS TDS
1 1 S S
mbar mbar
Time Baud
Day.Month No.
Ident Year
Time Baud
Day.Month No.
Ident Year
0 1 7 4
pH pH
C ° C °
AR AR
mV
8 8 4 4 2 2
TP TP
7 1
AutoCal DIN AutoCal DIN