W
ith ultrasonic and radar sensors as well as sensors with guided
microwave
,
the
"
E
cho curve
"
represents the signal strength of the
echoes over the measuring range
.
T
he units of the signal strength are
"
d
B
"
(
ultrasonic and radar
)
and
"
V
olt
"
(
guided microwave
).
T
he signal
strength enables the assessment of the quality of the measurement
.
W
ith ultrasonic and radar sensors
,
the
"
F
alse echo curve
"
represents
the saved false echoes
(
see menu
"
S
ervice
"
)
of the empty vessel with
signal strength in
"
d
B
"
over the measuring range
.
U
p to
3000
measured values are recorded
(
depending on the sensor
)
when starting a
"
T
rend curve
"
.
T
hen the values can be displayed on a
time axis
.
T
he oldest measured values are always deleted
.
I
n the menu item
"
C
hoose curve
"
,
the respective curve is selected
.
C
urve selection
E
cho curve
▼
I
nformation
:
T
he trend recording is not activated when being shipped
.
I
t must be
started by the user via the menu item
"
S
tart trend curve
"
.
A
comparison of echo and false echo curve allows a more detailled
speci
fi
cation on the measurement reliability
.
T
he selected curve is
updated permanently
.
W
ith the
[
OK
]
key
,
a submenu with zoom
functions is opened
.
T
he following functions are available with
"
E
cho and false echo
curve
"
:
l
"
X
-
Z
oom
"
:
Z
oom function for the meas
.
distance
l
"
Y
-
Z
oom
"
:
1
,
2
,
5
and
10
-
fold signal magni
fi
cation in
"
d
B
"
l
"
U
nzoom
"
:
R
eset the presentation to the nominal measuring range
with single magni
fi
cation
I
n the menu item
"
T
rend curve
"
the following are available
:
l
"
X
-
Z
oom
"
:
R
esolution
-
1
minute
-
1
hour
-
1
day
l
"
S
top
/
S
tart
"
:
I
nterrupt a recording or start a new recording
l
"
U
nzoom
"
:
R
eset the resolution to minutes
A
s default setting
,
the recording pattern has
1
minute
.
W
ith the
adjustment software
PACT
ware
,
this pattern can be also set to
1
hour
or
1
day
.
D
iagnosis
/
C
urve selec
-
tion
D
iagnosis
/
C
urve pre
-
sentation
14
I
ndicating and adjustment module
PLICSCOM
5
S
et up
-
S
ensors up to
SW
3
.
99
36433
-
EN
-
091104
