SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 01/2014, A5E32221386-AB
3
Table of contents
1
Introduction ............................................................................................................................................. 9
1.1
The manual .................................................................................................................................... 9
1.2
Firmware revision history ............................................................................................................. 10
2
Safety notes .......................................................................................................................................... 11
2.1
Safety marking symbols ............................................................................................................... 11
2.2
FCC Conformity ........................................................................................................................... 11
2.3
CE Electromagnetic Compatibility (EMC) Conformity.................................................................. 12
3
Description ............................................................................................................................................ 13
3.1
SITRANS LR250 overview ........................................................................................................... 13
3.2
Programming ................................................................................................................................ 14
3.3
Applications .................................................................................................................................. 14
3.4
Approvals and certificates ............................................................................................................ 14
4
Installing/mounting ................................................................................................................................ 15
4.1
Pressure applications ................................................................................................................... 16
4.1.1
Pressure Equipment Directive, PED, 97/23/EC ........................................................................... 16
4.2
Mounting location ......................................................................................................................... 16
4.2.1
4.2.2
Nozzle location ............................................................................................................................. 17
4.2.3
Orientation in a vessel with obstructions ..................................................................................... 20
4.2.4
Mounting on a Stillpipe or Bypass Pipe ....................................................................................... 20
4.2.5
Stillpipe or Bypass Pipe requirements ......................................................................................... 21
4.2.6
Device orientation ........................................................................................................................ 21
4.3
Installation instructions ................................................................................................................. 22
4.4
Flange bolting, Flanged encapsulated antenna only ................................................................... 22
5
Connecting ........................................................................................................................................... 25
5.1
Power ........................................................................................................................................... 25
5.2
Connecting SITRANS LR250 ....................................................................................................... 26
5.2.1
Basic PLC configuration with PROFIBUS PA .............................................................................. 28
5.3
Wiring setups for hazardous area installations ............................................................................ 28
5.3.1
PLC configuration with PROFIBUS PA for hazardous areas ...................................................... 29
5.3.2
Intrinsically safe wiring ................................................................................................................. 30
5.3.3
Non-sparking wiring ..................................................................................................................... 33
