3 ... 4 h
max
≥ 50 mm
90°
2
3
1
h
m
a
x
d
m
in
≥
2
m
m
x
h
m
a
x
90°
4
2
3
F
ig
.
16
:
F
low measurement with rectangular
fl
ume
:
d
min
.
=
min
.
distance of the
sensor
(
see chapter
"
T
echnical data
"
);
h
max
.
=
max
.
fi
lling of the rectangular
fl
ume
1
O
ver
fl
ow ori
fi
ce
(
side view
)
2
H
eadwater
3
T
ail water
4
O
verfall ori
fi
ce
(
view from bottom water
)
I
n general
,
the following points must be observed
:
l
I
nstall the sensor on the headwater side
l
I
nstallation in the centre of the
fl
ume and vertical to the liquid
surface
l
D
istance to the overfall ori
fi
ce
l
D
istance of ori
fi
ce opening above ground
l
M
in
.
distance of the ori
fi
ce opening to bottom water
l
M
in
.
distance of the sensor to max
.
storage level
VEGAPULS
62
•
4
…
20
m
A
/
HART
two
-
wire
23
4
M
ounting
36503
-
EN
-
100607