MFC
Functions
4.
55
4.2.5
Conductivity Measurement
The conductivity measurement represents a composite parameter
for the total mineralisation of water. This measurement depends
heavily on the temperature, therefore a temperature sensor is
integrated directly into the conductivity sensor. The measured
value is always indicated in relation to a certain temperature value.
The international reference temperatures are 20°C or 25°C.
The conductivity measuring system consists of:
•
Conductivity module with terminal strip
•
Conductivity sensor
•
Electrode support for pressurised/non-pressurised assembly
The LF325 conductivity measuring cell consists of a 4-electrode
system with integrated temperature sensor. The electrodes are
made of graphite and are therefore very robust and abrasion-
resistant. The cell constant is 0.48 cm
-1
.
The conductivity 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 electrodes can be installed in
the DEPOLOX
®
5/DEPOLOX
®
4 flow block assemblies or in a
separate Y flow-through adapter. The electrode support must also
be used if installing the pressurised version on the DEPOLOX
®
5
flow block assembly.
Installation notes
Ambient conditions
The following must be taken into account when installing the
conductivity measurement:
•
Select the sample water extraction point that guarantees
bubble-free sample water flow.
•
This does not require a certain flow rate.
•
The electrode must be immersed at least 4 cm deep into the
sample water.
•
If the conductivity electrode is not installed right next to the
MFC, the measuring cell cable can be lengthened up to no
more than 50 m using a connecting box and a six-core,
shielded cable (see 8. “Complete Devices, Retrofit Kits and
Spare Parts" on page 215).
•
Use terminal strips with right or left side connection routes
depending on the module slot in use. Find information on
connecting the sensor to the conductivity module in the wiring
diagrams under 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...