VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) 4 … 20 mA_HART - two-wire Approval according to LPR radio standard - Manual (Page 64)

Fault description Error pattern Cause Rectification
11. Measured value
remains unchanged in
the close range during
emptying
Level
time 0
l False echo larger than the
level echo
l Level echo too small
l Remove false echoes in the
close range. Check: Antenna
must protrude out of the socket
l Remove pollution on the an-
tenna
l Minimize interfering installa-
tions in the close range by
changing the polarization di-
rection
l After removing the false
echoes, the false signal sup-
pression must be deleted.
Carry out a new false signal
suppression
12. Measured value
jumps towards 0 % du-
ring emptying
Level
time 0
l The tank floor echo is larger
than the product echo, e.g.
with products with ε
r
< 2.5 oil-
based, solvents
l Application parameter "Me-
dium type", check Vessel
height and Floor form, adapt if
necessary
13. Measured value
jumps sporadically to-
wards 100 % during
emptying
Level
time 0
l Varying condensation or con-
tamination on the antenna
l Carry out false signal suppres-
sion or increase false signal
suppression in the close range
by editing
l With bulk solids use radar
sensor with purging air con-
nection
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 the normal working hours on
seven days a week around the clock.
Since we offer this service worldwide, the support is in the English
language. 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 one instrument and one electronics module with
respective Ex approval may be used.
Reaction after fault rec-
tification
24 hour service hotline
64 VEGAPULS 61 • Approval according to LPR radio standard
9 Diagnosis, Asset Management and service
41713
-EN
-120301