C
ode
T
ext mes
-
sage
C
ause
R
emoval
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 the electronics
l
S
end instrument for repair
9
.
4
R
ectify malfunctions
T
he operator of the system is responsible for taking suitable measures
to remove interferences
.
T
he
fi
rst measures to be taken are to check the output signal as well as
to evaluate the error messages via the indicating and adjustment
module
.
F
urther comprehensive diagnostics can be carried out on a
PC
with the software
PACT
ware and the suitable
DTM
.
I
n many cases
,
the causes can be determined this way and faults recti
fi
ed
.
C
onnect a handmultimeter in the suitable measuring range according
to the wiring plan
.
T
he following table describes possible errors in the
current signal and helps to remove them
:
E
rror
C
ause
R
emoval
4
…
20
m
A
signal
not stable
L
evel
fl
uctuations
S
et damping via the indicating and
adjustment module
4
…
20
m
A
signal
missing
E
lectrical con
-
nection faulty
C
heck connection according to chap
-
ter
"
C
onnection steps
"
and if ne
-
cessary
,
correct according to chapter
"
W
iring plan
"
V
oltage supply
missing
C
heck cables for breaks
;
repair if
necessary
O
perating voltage
too low or load
resistance too
high
C
heck
,
adapt if necessary
R
eaction when malfunc
-
tions occur
F
ault recti
fi
cation
C
hecking the
4
…
20
m
A
signal
50
VEGAPULS
62
•
4
…
20
m
A
/
HART
two
-
wire
9
D
iagnosis and service
36503
-
EN
-
100607