Xylem handylab multi 12 - Manual (Page 24)

Operation handylab multi 12
24 ba75371e03 11/2009
Preparatory
activities
AutoCal TEC For this procedure, use any two technical buffer solutions (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 4.8 C
ONFIGURATION ),
the instrument displays the relevant buffer nominal value or the current elec-
trode voltage in mV.
Note
Skip the steps 2 and 7 if you use a pH electrode with temperature probe or
the temperature probe of a conductivity measuring cell or a D. O. probe.
Starting the
calibration
1 Connect the pH electrode to the measuring instrument.
If necessary, press the key repeatedly until the status dis-
play pH (pH measurement) or U (measurement of the ORP
voltage) appears.
2 Keep the buffer solutions ready.
3 Adjust the temperature of the solution and measure the current
temperature if the measurement is made without the use of a
temperature probe (the TP display indicator is missing from the
display).
1 Press the key. The Ct1 display and the function display
AutoCal TEC appears. The sensor symbol displays the evalu-
ation of the last calibration (or no sensor symbol in the delivery
state or after the measurement parameter has been reset).
/pH mV
TDS O U
Tref20
Cal
8
S 1
Sal
% mg/l
1/cmSal
AutoCal DIN
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
t 1
° C
TP
pH
C
AutoCal TEC