Operators instructions cleverlevel switch, lbfs, Atex gas ia – Baumer CleverLevel - LBFS User Manual
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Operators instructions: 11109146 01 EN Page 4 / 8
ATEX Gas ia
Operators instructions
CleverLevel switch, LBFS
A certified Ex ia isolation barrier with the maximum values
U
max
30 VDC
I
max
0.1 A
P
max
0.75 W
must be used.
Use the isolating module PROFSI 3-B25100-ALG-LS (for PNP
output only) or a ZENER Barrier (for NPN output only) as
shown below.
Brown
Blue
Black
Two-channel
ZENER barrier
+
24 VDC
-
out
Safe area
Zone 0 /
LBFS-1xxx2.x
with NPN output
NB:
For NPN output only
Standard barrier may be used
M12 plug
Cable
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 -40 <T
amb
<85°C
T1...T5 -40 <T
amb
<74°C
Internal inductivity Li
<10 µH
Internal capacity Ci
<43 nF
Barrier data
U
<30 VDC
I
<0.1 A
P
<0.75 W
+
22...120 VDC
or
-
90...253 VAC
Safe area
Zone 0 / 1
LBFS-1xxxx.x
LBFS-1xxx1.x
with PNP output
M12 plug
Cable
Brown
Blue
Black
C +
B -
A PNP NO
Insulating module
PROFSI3-B25100-ALG-LS
3
NO
2
NC
1
COM
NB:
For PNP output the barrier module PFOFSI3-B25100-ALG-LS
is required for functional purposes.