Siemens 7ML5670 - Wiring Setups for Hazardous Areas

Wiring
SITRANS LC300
Operating Instructions, 05/2021, A5E47904073-AA
19
WARNING
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
WARNING
• 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
Process Temperature Range Max. Surface
Temperature (EPL
Da)
Max. Surface
Temperature
(EPL Db)
Temperature
Class (EPL Ga
or Gb)
-40 to +70°C (-40 to +158°F)
-40 to +75°C (-40 to +167°F)
1)
T200 80°C
T80°C
T6
-40 to +80°C (-40 to +176°F)
-40 to +90°C (-40 to +194°F)
1)2)
T
200
95°C
T90°C
T5
-40 to +80°C (-40 to +176°F)
-40 to +125°C (-40 to +257°F)
1)2)
T200 130°C
T90°C
T4
-40 to +80°C (-40 to +176°F)
-40 to +190°C (-40 to +374°F)
1)2)
T200 195°C
T90°C
T3
-40 to +80°C (-40 to +176°F)
-40 to +200°C (-40 to +392°F)
1)2)
T200 205°C
T90°C
T2
1)
With option FFKM O-ring seal: Lower process temperature limited to -20°C (-4°F)