Wiring Setups For Hazardous Area Installations; Flameproof / Explosion Proof Configuration In Hazardous Areas - Siemens SITRANS LC300 Operating Instructions Manual

The sensor terminal block connects the electronics to the measurement module, providing
the supply voltage and receiving the frequency signal from the measurement. The user
should not alter these connections.
Connect protective earth wire to terminal provided in housing and marked with
Use crimp type cable socket for 4 mm screw diameter, ring form or U-form (e.g. DIN 46234).
5.5
5.6

Wiring setups for hazardous area installations

• Turn off power before servicing any device.
• Please check the ambient and operating temperatures under Environmental and Process
in Technical data (Page 31) for the specific configuration you are about to use or install.
• In potentially explosive atmospheres:
– open the enclosure only when SITRANS LC300 is not energized.
Note
The transmitter is in operation when the power supply is switched on.
5.6.1

Flameproof / explosion proof configuration in hazardous areas

ATEX
Flameproof and Dust Ignition Proof with intrinsically safe output to probe
Ambient Temperature
Range
-40 to +70°C (-40 to +158°F)
-40 to +80°C (-40 to +176°F)
-40 to +80°C (-40 to +176°F)
-40 to +80°C (-40 to +176°F)
-40 to +80°C (-40 to +176°F)
With option FFKM O-ring seal: Lower process temperature limited to -20°C (-4°F)
1)
SITRANS LC300
Operating Instructions, 05/2021, A5E47904073-AA
WARNING
WARNING
Process Temperature Range
-40 to +75°C (-40 to +167°F)
-40 to +90°C (-40 to +194°F)
-40 to +125°C (-40 to +257°F)
-40 to +190°C (-40 to +374°F)
-40 to +200°C (-40 to +392°F)
Max. Surface
Temperature (EPL
Da)
T 80°C
1)
200
T 95°C
1)2)
200
T 130°C
1)2)
200
T 195°C
1)2)
200
T 205°C
1)2)
200
Max. Surface Temperature
Temperature Class (EPL Ga
(EPL Db) or Gb)
T80°C T6
T90°C T5
T90°C T4
T90°C T3
T90°C T2
Wiring
19