wtw pH 1970i, Руководство по эксплуатации

Страница: 19 / 71

pH 1970i Operation
19 ba75690e01 01/2007
4.2.3 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.
1 Perform the preparatory activities according to section 4.2.1.
2 Submerse the ORP electrode in the sample.
3 Press the <M> key until the U status display appears.
The ORP voltage (mV) of the test sample appears on the dis-
play.
4 Wait for a stable measured value.
REL1
%
TEC
Store
Oxi Cal
Auto
No.
Lin
Tref20
8
pH
AR
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
3 7
mV
TP
2 4 8
°
C
ARng
2