9
D
iagnosis and service
9
.
1
M
aintenance
W
hen the device is used correctly
,
no maintenance is required in
normal operation
.
9
.
2
M
easured value and event memory
T
he instrument has an integrated measured value memory with time
stamp
.
U
p to
100
,
000
measured values can be saved in the sensor in
a ringing memory
.
E
ach entry contains date
/
time as well as the
respective measured value
.
S
tored values are for exmaple sensor value
,
level
,
current value
,
reliability and electronics temperature
.
T
he data remain even in case of
voltage interruption
.
V
ia a
PC
with
PACT
ware
/
DTM
or the control system with
EDD
,
the
requested values and recording conditions are stipulated
.
D
ata are
also read our or reset
.
T
he instrument has an integrated event memory with time stamp
.
U
p to
500
events which cannot be deleted are stored in the sensor
.
E
ach
entry contains date
/
time
,
event time
,
event description and value
.
E
vent types are for example modi
fi
cation of a parameter
,
status and
error messages as well as switch on and switch o
ff
times
.
T
he data
remain also in case of voltage interruption
.
T
he data are read out via a
PC
with
PACT
ware
/
DTM
or the control
system with
EDD
.
T
he instrument has an integrated echo curve memory in which echo
curves can be stored for diagnosis purposes
.
T
he echo curves are
stored with date and time as well as the corresponding echo data
.
T
he
data remain even in case of voltage interruption
.
T
he memory is
divided ito two sections
:
E
cho curve of the setup
:
here you can store the echo curve as a
reference during setup
.
T
his echo curve can be used for example to
detect changes of the installation conditions or buildup on the antenna
.
E
cho curve memory
:
in this memory section up to
10
echo curves
can be stored in the sensor in a ring bu
ff
er
.
V
ia a
PC
with
PACT
ware
/
DTM
or the control system with
EDD
,
the
requested values and recording conditions are stipulated
.
D
ata are
also read out or reset
.
T
he echo curve during the setup can be stored
alternatively also via the indicating and adjustment module
.
M
easured value memory
E
vent memory
E
cho curve memory
46
VEGAPULS
62
•
4
…
20
m
A
/
HART
two
-
wire
9
D
iagnosis and service
36503
-
EN
-
100607
