User's Manual
Table Of Contents
- 8 Parameter reference
- 9 Service and maintenance
- 10 Diagnosing and troubleshooting
- 11 Technical data
- 12 Dimension drawings
- 12.1 Threaded horn antenna
- 12.2 Threaded horn antenna with extension
- 12.3 Flanged horn antenna
- 12.4 Flanged horn antenna with extension
- 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only)
- 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger)
- 12.7 Threaded PVDF antenna
- 12.8 Threaded connection markings
- 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna
- 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna
- 12.11 Flat-Face flange
- 12.12 Process connection tag (pressure rated versions)
- A Appendix A: Technical reference
- B Appendix B: HART communications
- C Appendix C: Certificates and support
- 13 List of abbreviations
- 14 LCD menu structure
- Glossary
- Index
Technical data
11.3 Interface
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
183
11.3
Interface
Analog output
Signal range
4 to 20 mA (± 0.02 mA accuracy) upper limit 20 to 23 mA adjustable
Fail signal
3.6 mA to 23 mA [For more details, see Fail-safe Mode] (Page 227)
Communication:
HART
1)
Load
230 to 600 Ω, 230 to 500 Ω when connecting a coupling module
Max. line length
multi-wire: ≤ 1500 m (4921 ft)
Protocol
HART, Version 5.1
Configuration
Remote
Siemens SIMATIC PDM or AMS Device Manager (PC)
Local
Siemens infrared handheld programmer, or HART handheld communicator
Display (local)
2)
graphic LCD, with bar graph representing level
1)
See A.6.3 for details on version exclusions
2)
Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F).
Curve 2 (Flameproof, Increased Safety, Explosion-proof) (Page 238)