Aging
SensoLyt
®
ORP 900-P
6
ba75993d03
06/2017
3
Aging
ORP electrodes are consumables. Every ORP electrode undergoes a natural
aging process. Extreme operating conditions can considerably shorten the
lifetime of the electrode. These are:
Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro-
mides, sulfides, iodides, proteins
High temperatures
High changes in pH and temperature.
The warranty does not cover failure caused by measuring conditions and
mechanical damage.
4
Storage
During short
measuring breaks
Immerse the electrode in reference electrolyte (KCl 3 mol/L, Ag
+
free). Prior
to the next measurement, shortly rinse the electrode with the test sample or
deionized water.
Overnight or
longer
Put the clean electrode in the watering cap that is filled with reference elec-
trolyte (KCl
3 mol/L, Ag
+
free).
NOTE
Do not store the electrode dry or in deionized water.
The electrode could be permanently damaged by this.
T (°C)
U
Ref
[mV]
T (°C)
U
Ref
[mV]
SensoLyt
®
ORP 900-P
SensoLyt
®
ORP 900-P
0
+221
35
+187
5
+216
40
+181
10
+212
45
+176
15
+207
50
+171
20
+202
55 +165
25
+197
60 +160
30
+192
During longer storing periods, salt sediments may develop on the
watering cap. They do not affect the measuring characteristics
and can easily be removed with deionized water when the elec-
trode is put into operation again.
