3 measuring the orp voltage, Measuring the orp voltage – Xylem MULTI 1970I PORTABLE MULTIPARAMETER METERS User Manual
Page 22
Operation
Multi 1970i
20
Note
The current AutoRead measurement can be terminated at any time
(accepting the current value) by pressing <RUN/ENTER>.
4.3.3
Measuring the ORP voltage
In conjunction with an ORP electrode, e.g. SenTix ORP, the measuring
instrument can measure the ORP voltage (U) of a solution.
Note
ORP electrodes are not calibrated. However, you can check ORP elec-
trodes using a test solution.
2
Activate the AutoRead function with <AUTO READ>.
The current measured value is frozen (hold function).
3
Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached.
This measured value is transmitted to the interface.
4
If necessary, start the next AutoRead measurement with
<RUN/ENTER>.
5
To terminate the AutoRead function: Press the
<AUTO READ> key.
1
Perform the preparatory activities according to section 4.3.1.
2
Submerse the ORP electrode in the sample.
3
Press the <
▲> <▼> key until the U status display appears. The
ORP voltage (mV) of the test sample appears on the display.
4
Wait for a stable measured value.
%
TEC
Store
Oxi
Cal
Auto
No.
Lin
Tref20
8
pH
AR
6
1
LoBat
nLF
Tref25
Time
Year
Ident
Day.Month
Baud
Sal
cm
1/
K
/
RCL
REL2
pH
/
m
cm
S/
%
mg/ l
Sal
O
S
2 3
mV
REL1
TP
2 4 8
°
C
ARng