LR3009
Electronic level sensor
8
3.4.1 Restriction of the application area
Incorrect measurements or signal loss may be caused by the following media:
Highly absorbing surfaces (e.g. foam).
Intensely bubbling surfaces.
Media which are very inhomogeneous, separate from each other thus forming separation layers
(e.g. oil layer on water).
u
Check the function by performing an application test.
u
Installation in a steady area.
w
In case of signal loss, the device displays [E.033] and switches the outputs to a defined
state.
The device is not suitable for bulk materials (e.g. plastic granulates).
The device is not suitable for applications where the probe is subjected to permanent and high
mechanical stress (e.g. heavy movement of viscous media or fast flowing media).
When installed in plastic tanks, deterioration caused by electromagnetic interference may occur (noise
immunity to EN61000-6-2).
In case of operation with coaxial probe: not suitable for soiled or viscous media and media prone to
formation of deposit. Maximum viscosity: 500 mPa
.
s.
•
If the device is to be used in acids or alkalis, in hygienic areas or in electroplating applications:
u
Check the compatibility of the product materials with the media to be monitored.
•
In case of operation with single probe:
u
Use preferably in metal tanks.
u
In case of operation in small tanks (rod lengths shorter than 200 mm and less than 300 mm
distance to the tank wall), interference from the tank (resonances) may occur in rare cases.
