65
10 Diagnostics and servicing
VEGAFLEX 82 • 4 … 20 mA/HART - two-wire
44222-EN-170220
Measurement error during emptying
Fault description
Error pattern
Reason
Rectification
7. Measured value re-
mains unchanged in
the close range during
emptying
Level
time
0
•
False signal larger than the level
echo
•
Level echo too small
•
Eliminate false signals in the
close range
•
Remove contamination on the
probe. After having removed the
source of the false signals, the
false signal suppression must
be deleted.
•
Carry out a new false signal
suppression
8. Measured value re-
mains reproducible
in one position during
emptying
Level
time
0
•
Stored false signals in this
position are larger than the level
echo
•
Delete false signal suppression
•
Carry out a new false signal
suppression
Depending on the reason for the fault and the measures taken, the
steps described in chapter "
Setup
" must be carried out again or must
be checked for plausibility and completeness.
Should these measures not be successful, please call in urgent cases
the VEGA service hotline under the phone no.
+49 1805 858550
.
The hotline is also available outside normal working hours, seven
days a week around the clock.
Since we offer this service worldwide, the support is provided in
English. The service itself is free of charge, the only costs involved are
the normal call charges.
10.5 Exchanging the electronics module
If the electronics module is defective, it can be replaced by the user.
In Ex applications, only instruments and electronics modules with ap-
propriate Ex approval may be used.
With SIL qualified instrument, only a respective electronics module
with SIL qualification must be used.
The electronics modules are adapted to the respective sensor. Hence
the new electronics module must be loaded with the default settings
of the sensor. These are the possibilities:
•
In the factory
•
Or on site by the user
In the factory
Order the spare electronics module from the agency serving your.
When ordering the spare electronics module, you have to state the
serial number of the sensor.
The serial numbers are stated on the type label of the instrument,
inside the housing or on the delivery note.
The spare electronics module is provided with the serial number of
the appropriate sensor. Check before mounting if the serial number
Reaction after fault recti-
fication
24 hour service hotline