MFC
Functions
4.
47
4.2.1
DEPOLOX
®
5 flow block assembly
DEPOLOX
®
5 flow block
assembly - 3 electrode
measurement for free Cl
2
, ClO
2
,
O
3
or KMnO
4
Potable, industrial and swimming pool water are disinfected
almost exclusively by adding chlorine, chlorine dioxide, ozone or
potassium permanganate.
Using the DEPOLOX
®
5 flow block assembly with integrated
3 electrode cell, the contents of this disinfectant can be
continuously recorded.
A sensor module ("DES" for 3 electrode cells) and terminal strips
are used to connect the DEPOLOX
®
5 flow block assembly to the
MFC. The module can be installed to slots 1 to 4 on the MFC.
Various controller functions are available depending on the slot
and application selected. The DEPOLOX
®
5 flow block assembly
is also used to install additional sensors, such as pH, Redox,
fluoride, conductivity, or membrane sensors for free chlorine,
chlorine dioxide, ozone, total chlorine or combined chlorine.
A pressurised and non-pressurised version with flow rate control is
available as a flow block assembly with integrated 3 electrode cells
(see “Possible sensor configurations" on page 32).
How the 3 electrode sensor in
the DEPOLOX
®
5 flow block
assembly works
The measuring cell in the DEPOLOX
®
5 flow block assembly is a
3 electrode cell with external potentiostatic control circuit. Working
and counter electrodes are designed as half-ring electrodes and
consist of a special platinum alloy.
The reference electrode is a silver silver chloride electrode, which
is connected to the sample water via two diaphragms
(membranes). The reference electrode with PVC support is
immersed into an electrolyte solution.
The electrolyte supply can be replenished during operation if
necessary (see 7.2 “Maintaining DEPOLOX® 5 flow block
assembly" on page 205).
By connecting the 3 electrode cell to the MFC (DES sensor module
for 3 electrode cell), a variable Upot cell voltage can be output
between the working electrode (red) and reference electrode
(white) via the potentiostatic control circuit. A measuring cell
current (µA signal), which is evaluated using the MFC, sets itself
proportional to the disinfectant concentration in the sample water.
A special cleaning sand is filled into the flow block assembly, which
is circulated by the sample water current and continuously cleans
the platinum electrodes.
A multi-sensor is integrated into the DEPOLOX
®
5 flow block
assembly to measure the temperature and monitor the flow rate.
This is made of a stainless steel housing and is used
simultaneously as the sample water grounding (for connection to
MFC, see 9. “Wiring Diagrams" on page 245).
Содержание WALLACE & TIERNAN MFC
Страница 1: ...WALLACE TIERNAN MULTI FUNCTION CONTROLLER MFC from version V 2 00 INSTRUCTION MANUAL...
Страница 2: ...2 WT 050 580 000 DE IM 0714 MFC Please note Original manual...
Страница 6: ...6 WT 050 580 000 DE IM 0714 Introduction MFC 1...
Страница 40: ...40 WT 050 580 000 DE IM 0714 Description MFC 3...
Страница 225: ...MFC Complete Devices Retrofit Kits and Spare Parts 8 225 DEPOLOX 5 drawing non pressurised version W3T170031 W3T170031...
Страница 229: ...MFC Complete Devices Retrofit Kits and Spare Parts 8 229 DEPOLOX 5 drawing pressurised version W3T170032 W3T170032...
Страница 233: ...MFC Complete Devices Retrofit Kits and Spare Parts 8 233 VariaSens drawing non pressurised version W3T158742 W3T158742...
Страница 237: ...MFC Complete Devices Retrofit Kits and Spare Parts 8 237 VariaSens drawing pressurised version W3T158756 W3T158756...
Страница 247: ...MFC Certificates 10 247 10 Certificates...
Страница 248: ...248 WT 050 580 000 DE IM 0714 Certificates MFC 10...
Страница 249: ...MFC Certificates 10 249...
Страница 250: ...250 WT 050 580 000 DE IM 0714 Certificates MFC 10...
Страница 262: ...262 WT 050 580 000 DE IM 0714 Settings table MFC 11...
Страница 266: ...266 WT 050 580 000 DE IM 0714 Index MFC 12...