C
ode
T
ext mes
-
sage
C
ause
R
ecti
fi
cation
M
503
R
eliability too
low
l
T
he echot
/
noise ratio is the
small for a reliable measu
-
rement
l
C
heck installation and pro
-
cess conditions
l
C
lean the antenna
l
C
hange polarisation direc
-
tion
l
U
se instrument with higher
sensitivity
M
504
E
rror on an
device inter
-
face
l
H
ardware defect
l
C
heck connections
l
E
xchange of the electro
-
nics
l
S
end instrument for repair
M
505
N
o echo avai
-
lable
l
L
evel echo can no longer
be detected
l
C
lean the antenna
l
U
se a more suitable an
-
tenna
/
sensor
l
R
emove possible false
echoes
l
O
ptimize sensor position
and orientation
9
.
4
R
emove interferences
T
he operator of the system is responsible for taking suitable measures
to rectify faults
.
T
he
fi
rst measures are
:
l
E
valuation of fault messages via the indicating and adjustment
module
l
C
hecking the
4
…
20
m
A
signal
l
T
reatment of measurement errors
F
urther comprehensive diagnosis possibilities are o
ff
ered by a
PC
with
the software
PACT
ware and suitable
DTM
.
I
n many case
,
the failure reasons can thus be determined and faults
recti
fi
ed
.
T
he below tables show typical examples for application
-
relevant
measurement errors with standpipe versions
.
T
here are two meas
-
urement errors
:
l
C
onstant level
l
F
illing
l
E
mptying
R
eaction when malfunc
-
tions occur
P
rocedure for fault rec
-
ti
fi
cation
T
reatment of measure
-
ment errors with stand
-
pipe versions
40
VEGAPULS
62
standpipe version
•
F
oundation
F
ieldbus
9
D
iagnosis
,
A
sset
M
anagement and service
36510
-
EN
-
120301