≥ 300 mm (11
13
/
16
")
150 mm (5
29
/
32
")
1
5
0
mm
(5
2
9
/
3
2
")
1
SW 13
L
F
ig
.
5
:
B
ow
-
shaped segment
ø
16
mm
(
0
.
63
in
)
1
M
ax
.
fi
lling height
L
150
mm
(
5
.
91
in
)
P
lastic vessel
/
G
lass vessel
T
he guided microwave principle requires a metal surface on the
process
fi
tting
.
T
herefore use in plastic vessels etc
.
an instrument
version with
fl
ange
(
from
DN
50
)
or place a metal sheet
(
ø
>
200
mm
/
8
in
)
beneath the process
fi
tting when screwing it in
.
M
ake sure that the plate has direct contact with the process
fi
tting
.
I
n bypass tubes of plastic
,
a metal screen must be provided on the
outside
.
Y
ou can glue metal foil
,
for example
,
on the outside along the
entire length of the tube
.
T
his metal screen must be connected to the
ground terminal on the instrument
.
W
hen installing rod or cable probes without metal vessel wall
,
e
.
g
.
in
plastic vessels
,
the measured value can be in
fl
uenced by strong
electromagnetic
fi
elds
(
emitted interference according to
EN
61326
:
class
A
).
I
n this case
,
use a probe in coax version
.
T
ype of vessel
VEGAFLEX
62
•
4
…
20
m
A
/
HART
two
-
wire
15
4
M
ounting
31837
-
EN
-
090831