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ATEX Gas ia
Ex ia IIC T5, ATEX II 1G - Installation
A Level Switch LBFS -1xxx.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
Ex-data
Supply range
24...30 VDC
Temperature class
T1...T4
T1...T5
Internal inductivity
Li
Internal capacity
Ci
Barrier data
U
I
P
LBFS-1xxx2.x
with NPN output
NB:
For NPN output only
Standard barrier may be used
LBFS-1xxx1.x
with PNP output
NB:
For PNP output the barrier module PROFSI3-B25100-ALG-
LS is required for functional purposes.
www.baumer.com
Operators instructions
CleverLevel switch, LBFS
-40 <T
<85°C
amb
-40 <T
<74°C
amb
<10 µH
<43 nF
<30 VDC
<0.1 A
<0.75 W
M12 plug
Cable
M12 plug
LBFS-1xxxx.x
A certified Ex ia isolation barrier with the maximum values
U
30 VDC
max
I
0.1 A
max
P
0.75 W
max
must be used.
Use the isolating module PROFSI3-B25100-ALG-LS (for PNP
output only) or a ZENER Barrier (for NPN output only) as
shown below.
Note:
There is an electrical connection between intrinsic safe circuit
and housing due to the measurement principle
Zone 0 /
Brown
Blue
Black
Zone 0 / 1
Brown
Blue
Cable
Black
Safe area
+
-
out
Two-channel
ZENER barrier
Safe area
3
NO
2
NC
1
COM
+
C +
B -
-
A PNP NO
Insulating module
PROFSI3-B25100-ALG-LS
Operators instructions: 11109146 04.2
24 VDC
22...120 VDC
or
90...253 VAC
Page 4 / 20
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