Electronic level sensor
LW2720
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CIP process:
The unit withstands standard CIP routines and SIP routines up to
140 °C.
Optimisation of cleaning agent storage.
3.2 Restriction of the application area
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The unit is not suitable for some bulk materials (e.g. coffee beans) due to their often very low
dielectric constant.
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Detection of bulk materials with a higher dielectric constant (e.g. grist due to its higher moisture
content) may be possible. See: Reflectivity, effect of dielectric constant (
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Check the function by performing an application test.
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The unit is a TLPR device. TLPR (Tank Level Probing Radar) equipment are devices for level
measurement in a closed space only (i.e. metallic, reinforced concrete or fibreglass tanks, or
similar enclosure structures made of comparable attenuating material).
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Installation must be carried out in accordance with the requirements of the following
standard:
ETSI EN 302 372 (TLPR), Annex E
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Use preferably in metal tanks. When used in electrically non-conductive tanks (e.g. fibreglass
tanks):
– there may be deterioration caused by electromagnetic interference from other devices (noise
immunity according to EN 61326-1). Corrective measures: Non-metallic tanks (
– or if the mounting position is unfavourable, nearby objects outside the tank may cause
disturbing echoes.
Incorrect measurements may be caused by the following media:
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heavily foaming or turbulent surfaces.
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media which are very inhomogeneous, separate from each other thus forming separation layers
(e.g. oil layer on water).
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Check the function by performing an application test.
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Installation in a steady area.
w
In case of permanent signal loss, the unit generates an error message and switches the outputs to
a defined state.
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