6
©
Dinel, s.r.o. ULM–70
• During filling, mixing and other processes,
foam
can arise on the surface level of the measured liq-
uid. The thick foam considerably absorbs the ultra-
sonic signal which might cause malfunction of the
level meter (Fig. 5). For such cases, it is necessary
to set up "SENSITIVITY" mode to "
high
" or contact
the manufacturer if need.
• If the emitted acoustic signal of the level meter is
affected by near objects (roughness on walls of
the tank, various partitions, mixers etc.), it is nec-
essary to map false reflections by activating the
mode "TEACHING". In case of installed mixers,
it is necessary to put the mixers to position under
the level meter (direct the mixer paddle to the ultra-
sonic signal beam).
Fig. 6: False echo from obstacles in the tank
Fig. 5: Thick foam on the surface
• Do not install the level meter in or above the
filling
point (Fig. 8).
• In case the level of bulk-solid materials is measured, the measurement range is reduced. We
recommend to consult the use with the manufacturer.
Fig. 7: False echo from the mixer paddle
!
Fig. 8: Level meter installation outside the influence of filling
