l
A
ssignment of the inputs and measurement loops
-
M
easurement loop
1
(
upstream water
):
S
tart under
"
M
easurement loops
-
M
eas
.
loop
1
-
I
nput
-
C
hange input
1
-
S
ensor selection
"
the menu item
"
S
ensor search
"
.
W
ith
correct addressing
,
both sensors must be displayed
.
S
elect
the
fi
rst sensor with address
01
-
M
easurement loop
2
(
downstream water
):
G
o under
"
M
easurement loops
-
M
easurement loop
1
-
I
nput
-
C
hange
input
1
-
S
ensor selection
"
to the menu item
"
S
ensor list
"
.
S
elect the second sensor with address
02
-
M
easurement loop
3
(
di
ff
erence
):
T
his measurement loop
calculates automatically without further settings the di
ff
erence
between upstream water and downstream water
(
measure
-
ment loop
1
minus measurement loop
2
)
l
A
djustment
-
M
easurement loop
1
(
upstream water
):
S
elect under
"
M
easurement loops
-
M
eas
.
loop
1
-
A
djustment
"
in the menu
item
"
A
djustment unit
"
the unit
"
m
"
(
meter
)
and the density unit
"
1
.
000
kg
/
dm
³
"
.
E
nter under
"
M
in
.
adjustment
"
0
.
00
m and
under
"
M
ax
.
adjustment
"
the max
.
level in meter
(
h
1
)
ein
.
I
.
e
.
in
the existing example
2
m
-
M
easurement loop
2
(
downstream water
):
C
arry out the
adjustment with the same speci
fi
cations as for measurement
loop
1
-
M
easurement loop
3
(
di
ff
erence
):
T
he adjustment of the
upstream water is taken over automatically
(
0
%
≙
0
.
00
m
,
100
%
≙
2
m
)
l
R
elay con
fi
guration
-
S
elect under
"
M
easurementloops
-
M
eas
.
loop
3
-
O
utputs
-
R
elay otuputs
-
R
elay
3
-
O
ver
fi
ll protection
-
P
ercent
"
the
menu item
"
S
witching points relay
3
"
.
E
nter for switching point
"
OFF
"
10
%
and for switching point
"
ON
"
5
%
.
W
ith these
settings
,
the relay deenergizes at a di
ff
erence of
20
cm and
switches on again at
10
cm
.
H
ence the cleaning procedure
starts with a gauge di
ff
erence of more than
20
cm and is
running until the di
ff
erence is again below
10
cm
.
8
.
3
I
nterface measurement with
VEGAFLEX
67
I
n an interface measurement
,
there are two di
ff
erent media which do
not mix
,
e
.
g
.
water and oil or solvents
.
T
o detect the volume of both
products
,
it is necessary to detect the height of the upper liquid
(
level
)
and the interface between the two products
.
A VEGAFLEX
67
is
necessary as a transmitter which delivers the distance to the upper
medium as well as the distance to the interface
.
V
ia the adjustment in
VEGAMET
625
the level
,
interface and layer thickness of the upper
medium can be calculated and displayed
.
T
he following steps are necessary
:
VEGAMET
625
•
D
ouble channel
HART
signal conditioning instrument
45
8
A
pplication examples
28970
-
EN
-
110801
