7
UK
Applications
4.3
Water, water-based media
•
Oils, oil-based media (only for operation with coaxial probe)
•
Medium temperature: 0…80 °C (permanent); 0…90 °C (short-term)
•
Tank pressures: -1���4 bar
•
Application examples:
Detection of coolant emulsion in a machine tool�
•
Detection of cleaning liquid in a parts cleaning system�
•
Monitoring of hydraulic oil in a hydraulic power unit (only for operation with
•
coaxial probe)
Restriction of the application area
The unit is not suitable for bulk materials (e�g� plastic granulates)
•
If the unit is to be used in acids or alkalis, in hygienic areas or in electroplating
•
applications: first check the compatibility of the product materials (→ chapter
13, Technical data) with the media to be monitored�
Incorrect measurements or signal loss may be caused by the following media:
•
Highly absorbing surfaces (e�g� foam)�
-
Intensely bubbling surfaces�
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Media which are very inhomogeneous, separate from each other thus forming
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separation layers (e�g� oil layer on water)�
Check the function by an application test�
In case of signal loss, the unit displays [E�033] and switches the outputs to a
defined state (→ 11.5).
The unit is not suitable for applications where the probe is subjected to per-
•
manent and high mechanical stress (e�g� strongly moving viscous media or
strongly flowing media)�
In case of operation with single probe: use preferably in metal tanks� When
•
installed in plastic tanks, deterioration caused by electromagnetic interference
may occur (noise immunity to EN61000-6-2). Remedy: → 6.4.2.
In case of operation with coaxial probe: not suitable for viscous media and
•
media prone to formation of deposit�
