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ATEX
Conditions for Ex certification
ATEX Gas ia
Ex ia IIC T5, ATEX II 1G - Installation
A Level Switch LFFS-1xx.x is Ex ia IIC T5, ATEX II 1G ap-
proved for application in hazardous areas in accordance with
the current EU directives. The product must be installed in
accordance with prevailing guidelines for zone 0 with a barrier
Note:
There is an electrical connection between intrinsic safe
circuit and housing due to the measurement principle
LFFS-1xx.x
with NPN output
NPN out
www.baumer.com
Connection type
G½ hygienic
3A DN38
100 mm
Sliding connection
250 mm
Sliding connection
Note:
For NPN output only!
A standard barrier may be used
Two-channel
ZENER barrier
Operating instructions: 11109132 13 EN
Operating instructions
CleverLevel switch, LFFS
Ambient temperature Media temperature
-40 ... +85 °C
-40 ... +60 °C
-40 ... +40 °C
-40 ... +85 °C
-40 ... +60 °C
-40 ... +40 °C
-40 ... +85 °C
-40 ... +60 °C
-40 ... +40 °C
Ex-data
Supply range
Temperature class
Internal inductivity
Internal capacity
Barrier data
LFFS-1xx.x
with PNP output
Note
(max. allowed)
+85 °C
+95 °C
1)
+115 °C
1)
+85 °C
+155 °C
1)
+175 °C
1)
+85 °C
+195 °C
1)
+200 °C
1)
24...30 VDC
T1...T5
Pls. see above table
L
<10 µH
i
C
<33 nF
i
U
<30 VDC
I
<0.1 A
P
<0.75 W
Note:
For PNP output the barrier module
PROFSI3-B25100-ALG-LS
is required for functional purposes.
1) Provided that
the sensor tip
at the instru-
ment is the
only part in
contact with
the media
Safe area
+ 22...120 VDC
or
- 90...253 VAC
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