User's Manual

73
9 Diagnosis, asset management and service
VEGAPULS 62 • 4 … 20 mA/HART - two-wire
36503-EN-161221
Fault description Error pattern Cause Rectication
13. Measured value
jumps sporadically to-
wards 100 % during
emptying
Level
time
0
•
Varying condensation or con-
tamination on the antenna
•
Carry out false signal suppres-
sion or increase false signal
suppression in the close range
by editing
•
With bulk solids, use radar sen-
sor with purging air connection
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. [phone].
The hotline is also available outside normal working hours, seven
days a week around the clock.
Sinceweoer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.
9.5 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.
If there is no electronics module available on site, the electronics
module can be ordered through the agency serving you. The electron-
icsmodulesareadaptedtotherespectivesensoranddierinsignal
output or voltage supply.
The new electronics module must be loaded with the default settings
of the sensor. These are the options:
•
In the factory
•
Or on site by the user
In both cases, the serial number of the sensor is needed. The serial
numbers are stated on the type label of the instrument, on the inside
of the housing as well as on the delivery note.
Whenloadingonsite,rstofalltheorderdatamustbedownloaded
from the Internet (see operating instructions manual "Electronics
module").
Caution:
Alluser-specicsettingsmustbeenteredagain.Hence,youhaveto
carry out a new setup after the electronics exchange.
If you have stored the data of the parameter adjustment during the
rstsetupofthesensor,youcantransferthesetothereplacement
electronics module. A new setup is no more necessary.
Reaction after fault recti-
cation
24 hour service hotline