Operating Instructions
Level measurement
CleverLevel
®
LBFH/I
Point level detection – hygienic/industrial
DANGER
Risk of fatal accident if installation requirements are ignored
Correct gas and dust protection can only be achieved by meeting their installation requirements.
f
Make sure that all requirements are met and that sensor and installation have a valid approval for
their speci
fi
c explosive atmosphere.
f
In an explosive gas atmosphere, always use the sensor with a barrier.
7.2 Explosive dust atmospheres zones 20, 21 and 22
The LBFH/I can be used in explosion hazard areas of zone 20, 21 and 22.
Approval for LBFx.xx.xxx.xxxxxx.x.4xxx.x: ATEX II 1D Ex ta IIIC T100 °C Da (TÜV 17 ATEX 188894 X)
LBFx.xx.xxx.xxxxxx.x.4xxx.x:
ATEX II 1D Ex ta IIIC T100 °C Da
f
Use insulated cable to IP67.
f
Secure cables with external strain relief at a
distance 5 centimeters from the sensor.
f
Comply with the following temperatures,
connection values and circuit diagram.
Voltage supply range
30 V DC max.
Temperature class
T100°C:
–40 < Tamb < 85 °C
Surface temperature
100 °C max.
Protection class fpr cable
accessories
IP67
1
3
4/2
+
–
SW1/SW2
Function M12-A
4 pin
+ Vs
1
GND (0V) 3
SW1/SW2 4/2
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7.3 Explosive gas atmospheres zone 2
The LBFH/I can be used in explosion hazard areas of zone 2.
Approval for LBFx.xx.xxx.xxxxxx.x.3xxx.x: ATEX II 3G Ex nA IIC T4 Gc (TÜV 17 ATEX 188895 X)
LBFx.xx.xxx.xxxxxx.x.3xxx.x:
ATEX II 3G Ex nA IIC T4 Gc
f
Comply with the following temperatures,
connection values and circuit diagram
Voltage supply range
Un: 30 V DC max.
Temperature class
T1…T4:
–40 < Tamb < 85 °C
1
3
4/2
+
–
SW1/SW2
Function M12-A
4 pin
+ Vs
1
GND (0V) 3
SW1/SW2 4/2
