VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus Approval according to LPR radio standard - Manual (Page 61)

Fault description Error pattern Cause Rectification
10. Measured value
jumps to ≥ 100 % or 0 m
distance
Le
ve
l
time 0
l Level echo is no longer de-
tected in the close range due
to foam generation or false
echoes in the close range. The
sensor goes into overfill pro-
tection mode. The max. level
(0 m distance) as well as the
status message "Overfill pro-
tection" are outputted.
l Check measuring site: Antenna
must protrude out of the socket
l Remove pollution on the an-
tenna
l Use a sensor with a more
suitable antenna
Measurement error during emptying
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.
Reaction after fault rec-
tification
24 hour service hotline
VEGAPULS 61 • Approval according to LPR radio standard 61
9 Diagnosis, Asset Management and service
41716
-EN
-120301