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wtw pH 197i Bedienungsanleitung Seite 22

Portables ph/mv-meßgerät
Vorschau ausblenden Andere Handbücher für pH 197i:
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Calibration
pH
S
1
C
T 1
O
Sal
Time
Baud
8
2 4 8
Day.Month
No.
Year
Ident
Tref25
Tref20
Auto
LoBat
nLF
Lin
Oxi
Cal
pH
S
1
C
T 2
O
Sal
Time
Baud
8
2 4 8
Day.Month
No.
Year
Ident
Tref25
Tref20
Auto
LoBat
nLF
Lin
Oxi
Cal
pH
S
-
5 9 4
O
Sal
pH
S
1
2
O
Sal
pH
S
1
C
T 3
O
Sal
Time
Baud
8
2 4 8
Day.Month
No.
Year
Ident
Tref25
Tref20
Auto
LoBat
nLF
Lin
Oxi
Cal
22
Downloaded from
www.Manualslib.com
AutoCal TEC / AutoCal DIN procedure:
The following example shows the AutoCal TEC calibration. In the
AutoCal DIN calibration, Cd... appears on the display instead of Ct....
Otherwise, both procedures are identical.
The selection of the calibration procedure, AutoCal TEC (display Ct1) or
AutoCal DIN (display Cd1) is made with the <CAL> key.
l Connect the pH electrode to the measuring instrument.
l Press the <CAL> key repeatedly until the Ct1 display indicator and the
mV
/
pH
Auto Cal TEC function display appear. The sensor symbol displays the
% mg/l
S/
m
cm
evaluation of the last calibration (or no sensor symbol in the delivery state
1/
cm
Sal
or after the measuring parameters have been reset).
C
°
/
%
K
TP
l Immerse the pH electrode in the first buffer solution.
Store
REL1
REL2
TEC
ARng
AR
RCL
l When measuring without a temperature sensor:
Enter the temperature of the first buffer solution with <L> <M>.
l Press <RUN/ENTER>. The AutoRead measurement begins. The
electrode voltage (mV) or the buffer nominal value (see C
appears on the display. When the measured value is stable, Ct2
appears.
Note
mV
/
pH
At this point, the AutoCal TEC calibration can be terminated
% mg/l
S/
m
cm
with <M>. This corresponds to a single-point calibration. To
1/
cm
Sal
do this, the instrument uses the Nernst slope (-59.2 mV/pH at
C
°
/
K
%
TP
25 °C) and determines the asymmetry of the electrode.
Store
REL1
REL2
TEC
ARng
AR
RCL
l To continue the two-point calibration, immerse the pH electrode in the
second buffer solution.
l When measuring without a temperature sensor:
Enter the temperature of the second buffer solution with <L> <M>.
l Press <RUN/ENTER>. The AutoRead measurement begins. The
electrode voltage (mV) or the buffer nominal value appears on the
display.
l When the measured value is stable, the instrument displays the value of
mV/
pH
the slope and the evaluation of the two-point calibration.
% mg/l
S/
m cm
l Press <RUN/ENTER>. The instrument displays the value of the
mV
pH
asymmetry.
mg/l
S/
cm
Note
mV
/
pH
At this point, the AutoCal TEC calibration can be terminated
% mg/l
S/
m
cm
with <M>. This corresponds to a two-point calibration.
1/
cm
Sal
C
°
/
%
K
TP
Store
REL1
REL2
TEC
ARng
AR
RCL
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pH 197i
)
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