6
4 Functions and features
The unit continuously detects the level in tanks and generates output signals
according to the parameter settings�
4 switching outputs are available� They can be set separately�
For correct function the unit needs a large enough metal launching plate� It
is necessary for transferring the microwave pulse to the tank with optimum
transmission power�
The flange plates that are available as accessories are not sufficient as
launching plates� Only use accessories indicated as "launching plate"�
Suitable launching plates: (
→ 6.4
)�
For installation in closed metal tanks, the tank lid serves as a launching
plate� For installation in open metal tanks, tanks made of plastic or metal
tanks with plastic lids a sufficiently large fixing plate, a metal plate or
similar must be used (
→ 6.4.3
/
→ 6.4.4
)�
Furthermore, minimum distances to tank walls, objects in the tank, bottom
of the tank and further level sensors must be adhered to
(→ 6.1)
�
4.1 Applications
• Water, water-based media
Application examples:
• Detection of coolant emulsion in a machine tool�
• Detection of cleaning liquid in a parts cleaning system�
4.1.1 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)�
►
Check the function by performing an application test�
►
Installation in a steady area
(→ 6.1)
�
> In case of signal loss, the unit displays [E�033] and switches the
outputs to a defined state
(→ 11.5)
�
