Xylem Sentix ORP 900 - Manual (Page 6)

Aging SenTix
16 ba75845e01 08/2009
Storage
During short
measuring breaks
Immerse the electrode in the reference electrolyte with the refilling opening
open.
Prior to the next measurement, shortly rinse the electrode with the test
sample or deionized water.
Overnight or
longer
Insert the clean electrode into the watering cap filled with reference
electrolyte and shut the refilling opening.
Note
During longer storing periods, salt sediments may develop on the watering
cap. They do not affect the measuring characteristics and can easily be re-
moved with deionized water when the electrode is put into operation again.
Aging
Every ORP electrode undergoes a natural aging process. Extreme operating
conditions can considerably shorten the lifetime of the electrode. These are:
z Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro-
mides, sulfides, iodides, proteins
z High temperatures
z High changes in pH and temperature.
The warranty does not cover failure caused by measuring conditions and
mechanical damage.
Electrode Reference electrolyte WTW model
(see page 19)
SenTix
®
ORP 900 3 mol/l KCl, Ag
+
free KCl-250 (250 ml)