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
Appendix A: Technical reference
A.2 Echo Processing
SITRANS LR250 (HART)
216 Operating Instructions, 01/2014, A5E32220602-AB
A.2
Echo Processing
A.2.1
Process Intelligence
The signal processing technology embedded in Siemens radar level devices is known as
Process Intelligence
.
Process intelligence provides high measurement reliability regardless of the dynamically
changing conditions within the vessel being monitored. The embedded Process Intelligence
dynamically adjusts to the constantly changing material surfaces within these vessels.
Process Intelligence is able to differentiate between the true microwave reflections from the
surface of the material and unwanted reflections being returned from obstructions such as seam
welds or supports within a vessel. The result is repeatable, fast and reliable measurement. This
technology was developed as result of field data gained over some twenty years from more than
1,000,000 installations in many industries around the world.
Higher order mathematical techniques and algorithms are used to provide intelligent processing
of microwave reflection profiles. This "knowledge based" technique produces superior
performance and reliability.