Xylem Magflux Electromagnetic Flow Meter - Manual (Page 15)

15
Electromagnetic Flow Meter
FW: 842018/842009
3. Flow Sensor
The following conditions must be satisfied to get the full benefit of the
MagFlux
® flow sensor.
Minimum conductivity
• The conductivity of the media must be greater than 5 µS/cm.
Liner selection
• Use Teflon ® lining for chemicals and food industries
• Use hard rubber lining for drinking water and waste water
• Use soft rubber lining for water with abrasive particles
Electrode selection
• Steel AISI 316TI-1.4571 for general purpose, sewage, water and district
heating systems
• Hastelloy for sea water
• Titanium and platinum for chlorine and other aggressive chemicals
Mounting location
• To obtain a stable and accurate flow measurement, it is very important
that the flow sensor is mounted correctly in the pipe system
• There must be no flow fluctuations
• Avoid locations where vacuum can occur; especially for flow sensors
with Teflon™ linings
• Avoid locations with vibrations from for example pumps
• Avoid locations with extensive temperature changes
• Avoid corrosive environments and locations with a great risk of con-
densation, or consult factory for special builds for these locations
• Take care that condensate and water cannot enter the connector box
on the flow sensor.
• There must be sufficient free space around the flow sensor.
• IMPORTANT: Observe that the correct flow direction is set in the
MagFlux ® "Converter Setup" menu and in the "Service Menu". Default
flow direction is "A" (flow direction towards left).