Autoread Ar (Drift Control) - wtw pH/Oxi 340i Operating Manual

Operation
Criteria
36

4.4.4 AutoRead AR (Drift control)

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.
1 Call up the measuring mode with <M> and/or < > < > .
2 Activate the AutoRead function with <AR>. The current mea-
sured value is frozen (hold function).
3 Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached. This mea-
sured value is transmitted to the interface.
TDS U pH O
S
1 7 9 2
Baud
Time
8 1 7
Day.Month No.
Year Ident
Tref25 Tref20 AutoCal DIN
LoBat nLF Lin Cal AutoCal TEC
4 If necessary, start the next AutoRead measurement with
<RUN/ENTER>.
5 To terminate the AutoRead function: Press the <AR> key.
With identical measurement conditions, the following applies:
Measured
parameter
D. O. concentra-
tion
D. O. saturation
index
Sal
mV /pH
% mg/l
m S/
cm
mbar M cm
1/ cm Sal
6
°
C
/
% K
TP
° F
Auto Store
ARng
AR RCL
Reproducibility
better than 0.05 mg/l
better than 0.6 %
pH/Oxi 340i
Response time
> 10 seconds
> 10 seconds