DEPOLOX® 400 M
3. Description
15
EN
3.7
DEPOLOX® 5 C flow cell
The DEPOLOX® 5 C flow cell has a 3-electrode
cell and is available in a non-pressurized or
pressurized version. The versions also differ in
the number and layout of the sensors that can
be installed and in the design of the sample
water outlet.
3.7.1 Design
Fig. 6
Cross-section, DEPOLOX® 5 C flow cell,
pressurized version
A Cover to hold the sensors and the LED glow
stick (cell body cover)
B
Cell body
C
3-electrode cell with electrolyte storage
tank
D Cap of the 3-electrode cell
E
Sample water outlet with ball valve (on
non-pressurized version without ball valve)
F
Flow cell drain valve
G Sample water inlet with ball valve
H Filter unit
I
Check valve housing
J
Flow control valve
K
Multi-sensor
3.7.2 Function
The following section describes the functional
principle of the DEPOLOX® 5 C flow cell from
the sample water inlet to the sample water
outlet (see chapter 3.7.1).
The sample water is connected on the input
side via the G1/2” connection on the ball
valve. The input pressure must be around 4 to
45 psig (0.25 to 3.0 bar). To guarantee a cons-
tant flow, the minimum input pressure must
not be less than 4 psig (0.25 bar). If the pres-
sure is lower, an optional booster pump must
be used. If the inlet pressure exceeds 45 psig
(3.0 bar), an optional pressure reducing valve
must be used.
The sample water flows over the optional
strainer, which prevents dirt particles pene-
trating into the flow cell.
The check valve ensures the sample water can
only flow in the correct direction.
The multi-sensor monitors the correct flow
following the float principle with reed switch
and records the temperature with a Pt1000
sensor. Large-area sample water earth ground
is via the stainless steel sensor housing.
The flow control valve ensures a flow of the
sample water that is not dependent on the
operating pressure. The correct sample water
flow of 0.15 gal/min (33 l/h) is preset, checked
and documented at the factory.
The cell body contains the 3-electrode cell
with external potentiostatic control loop and a
refillable electrolyte storage tank. Working
and counter electrode are designed as semi-
annular electrodes and made from a special
platinum alloy. A silver-silver chloride elec-
trode connected to the sample water via two
diaphragms serves as the reference electrode.
The reference electrode is dipped into an elec-
trolyte solution which can refilled as needed.
G F
E
A
B
C
D
K
J
I
H
NOTICE
The DEPOLOX® 5 C flow cell can be used for
the measurement of free chlorine, ozone,
potassium permanganate and chlorine
dioxide. It must be ensured that only one of
these disinfection agents is present in the
water.
