ABB AquaMaster4 - Flow Direction; Straight Pipe Requirements; Electrode Axis

AQUAMASTER4 | ELECTROMAGNETIC FLOWMETER FLANGED SENSOR | OI/FEW400/FRV-EN REV. A
13
Flow direction / straight pipe requirements
Ensure the flow direction in the pipeline corresponds to the
identification plate. The sensor measures the flowrate in both
directions. Forward flow is the factory setting.
V-style sensor: in most installations, a straight upstream
section 5 x pipe diameters in length and a straight downstream
section 0 x pipe diameters in length are sufficient.
5 x pipe
diameters min.
>0 x pipe
diameters min.
Flow direction
Figure 18 V-style sensor –
flow direction / straight pipe requirements
R-style sensor: straight upstream and downstream sections
0 x 0 pipe diameters in length are recommended.
0 x pipe diameter
0 x pipe diameter
Flow direction
Figure 19 R-style sensor –
flow direction / straight pipe requirements
F-style sensor: in most installations, a straight upstream
section 5 x pipe diameters in length and a straight downstream
section 2 x pipe diameters in length are sufficient.
5 x pipe
diameters min.
>2 x pipe
diameters min.
Flow direction
Figure 20 F-style sensor –
flow direction / straight pipe requirements
Electrode axis
The electrode axis must be horizontal wherever possible or
no more than 45° from horizontal.
45° max.
Electrode axis
Figure 21 Flow conditions / orientation (electrode axis)