AquaProbe FEA100 / FEA200
Electromagnetic flowmeter – insertion-type flow sensors
3 Mechanical Installation
12
OI/FEA100/200–EN Rev. D
It is important to add the external length from the fixing point to the insertion length. Failure to do this can
give incorrect information from the graphs, resulting in vortex shedding affecting AquaProbe.
Examples:
A 600 mm pipe with the probe mounted on the centre line has an insertion length of 300 mm.
A typical valve is approximately 250 mm high and the distance to the support point inside the probe
is approximately 100 mm therefore, in this example, the total effective length is 650 mm.
Max velocity at 650 mm is 3.6 m/s.
Fig. 3.3 Maximum Permissible Velocity for Different Pipe Sizes
Fig. 3.4 Maximum Permissible Velocity for Different Insertion Lengths
Insertion
Length
Effective
Probe
Length
Pipe Size in Inches
Effective Probe Length in mm
Traversing
M
a
x
imum
V
e
lo
city
in ft/s
Max
imu
m V
e
lo
ci
ty i
n
m
/s
8
16
24
32
40
48
56
64
72
80
20.0
17.0
13.0
10.0
7.0
3.0
0
0
200
400
600
800 1000 1200 1400 1600 1800 2000
6.0
5.0
4.0
3.0
2.0
1.0
0