Baumer CleverLevel - LFFS - Manual (Page 5)

Media temperature and external length for sliding connection
Operators instructions
CleverLevel switch, LFFS
Media temperature °C
120
115
110
105
100
95
90
85
80
75
50 55 60 65 70 75 80 85 90
Ambient temperature °C
LFFS-xx1.x / LFFS-xx2.x LFFS-xx3.x and LFFS-xx4.x
External length of sliding connection
Media temperature °C
External length
See example
The drawing shows how the sliding connection can be
used for at least 4 applications:
1) Mounted at the top of a tank to adjust to a
maximum level.
2) Serving as a cooling neck in high media
temperature applications.
3) Adjusted to place the sensor tip deeper
inside the tank.
4) To reach in through insulation material.
It is essential that the max. ambience temperature for the electronics
is never exceeded (85°C). For ATEX approved products please refer
ATEX data.
Example, how to read External length curve:
Example: Media temperature / Ambient temperature / External length
160°C 60°C 120 mm
 A 250 mm sliding connection is mounted in a tank with a total in-
sert length of 130 mm. Hence the external length of the sliding
connection will be 250 – 130 = 120 mm.
 The media temperature will be max. 160 °C.
 Read the x-axis at 120 mm an the y-axis at 160°C and find that
the ambient temperature must be kept below 60°C.
In case the radiated heat from the tank will cause a higher ambient
temperature at the housing efficient insulation of the tank must be
established.
www.baumer.com Operators instructions: 11109132 02 EN Page 5 / 12
For CIP/SIP Media temperature, max. 140°C
Ambient temperature, max. 60°C
Duration, max. 1 hour
When re-ordering a CleverLevel switch
If a new CleverLevel switch is installed in an existing application, it is normally a “plug-n’-play” operation.
If the settings of the level switch was changed from standard factory settings, it is necessary to re-adjust the new switch to same
as the “old” switch. It is possible to save the settings of the “old” switch on the PC and download those again to the new level
switch.
The factory setting of the sensitivity of the media may vary up to ±5%. This means that if an very exact set point is required, a new
teach-in or adjustment by the FlexProgram must be performed.