Evoqua DEPOLOX, Инструкция по эксплуатации

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DEPOLOX® 400 M 3. Description
19
EN
The pH sensor is installed in an electrolyte
reservoir (transport container) with diluted
electrolyte which protects the sensitive mem-
brane, keeps the membrane moist and thus
ensures that the measuring cell is ready for
immediate use. If the pH sensor is not used,
e.g. over the winter, the pH sensor must be
plugged in the transport container with dilu-
ted electrolyte (KCl tank with stand and 5 ml
KCl solution).
3.10.3 ORP sensor (mV)
The ORP sensor consists of a ORP combination
electrode. The ORP sensor consists of a glass
shaft with a platinum or gold tip fused into its
lower end.
Together with a silver/silver chloride elec-
trode (Ag/AgCl) as a reference electrode, it
forms a measuring chain. The task of the refe-
rence electrode is to provide a constant
potential during potentiometric measure-
ments. This potential is measured against the
potential of the metal electrode.
The electrolyte is a saturated potassium chlo-
ride solution. As the chloride concentration of
the electrolyte remains almost constant, the
potential of the reference electrode is also
constant. Salt rings as an additional salt depot
further increase the service life of the ORP
sensor.
A ceramic membrane permeable for the elec-
trolyte provides the electrical connection to
the measuring solution. This ceramic memb-
rane is particularly suitable for the treatment
of drinking water and water in swimming
pools and baths, as the electrolyte can only
flow slowly through the pores of the ceramic
pin, thus ensuring very long service life for the
entire measuring chain.
The ORP sensor is installed in an electrolyte
container with diluted electrolyte which pro-
tects the sensitive membrane, keeps the
membrane moist and thus ensures that the
measuring cell is ready for immediate use.
When the ORP sensor is not in use, for exam-
ple during the winter, we recommend storing
it in the transport container in diluted electro-
lyte.
The following reference values apply for quick
and complete disinfection of the water in
swimming pools and baths:
3.10.4 Fluoride sensor
Fluoride measurement using a fluoride-ion-
selective electrode is used for continuous
identification of fluoride ions in the solution.
To obtain a correct reading, the pH value of
the measured medium must be within a range
from pH 5 to pH 8.
The reference system is filled with electrolyte.
NOTICE
The ORP sensor (Redox) can be installed in
the non-pressurized and pressurized version
of the DEPOLOX® 5 C and VariaSens C flow
cells. The ORP sensor (Redox) can also be
installed in the Y-style flow-through assem-
bly for individual measurement.
Fresh water
pH 6,5 to 7,3 UG > 750 mV
pH 7,3 to 7,6 UG > 770 mV
NOTICE
The fluoride sensor can be installed in the
non-pressurized version of the DEPOLOX®
5 C and VariaSens C flow cells.
The fluoride sensor can also be installed in
the Y-style flow-through assembly for indivi-
dual measurement.
ATTENTION
Rapid, repeated changes in temperature
result in a constant change in the potential.
This can cause functional failure of the elec-
trode.