Multi 197i
Operation
39
ba75339e04
07/2009
4.5.4
AutoRead AR (Drift control) and hold function
The AutoRead function (drift control) checks the stability of the mea-
surement signal. The stability has a considerable impact on the repro-
ducibility of the measured values. With the aid of the hold function the
measured value display is frozen.
For conductivity measurements, use the AutoRead function and hold
function like this:
Note
The current AutoRead measurement can be terminated at any time
(accepting the current value) by pressing
<RUN/ENTER>
. You can
only change to another measuring mode after completion of AutoRead.
1
Call up the measuring mode
or
SAL
with
<M>
and/or
<
▲
>
<
▼
>
.
2
Immerse the conductivity measuring cell in the test sample.
3
Activate the AutoRead function with
<AUTO READ>
. The cur-
rent measured value is frozen (hold function).
4
Start AutoRead with
<RUN/ENTER>
.
AR
flashes until a stable measured value is reached.
This measured value is transmitted to the interface.
5
If necessary, start the next AutoRead measurement with
<RUN/ENTER>
.
6
To terminate AutoRead: Press the
<AUTO READ>
key.
Sal
Cal
RCL
%
cm
1/
S
0
%
m
mg/ l
O
Oxi
Year
Ident
No.
Day.Month
Tref20
LoBat
Lin
Sal
pH
C
TEC
Auto
Store
Time
Baud
K
/
REL2
pH
/
mV
2 5 0
Tref25
0
5 3
cm
S/
nLF
°
C
REL1
ARng
TP
AR