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
Parameter reference
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
123
①
Sensor reference point
⑤
4 mA 0%
②
High calibration point
⑥
Distance
③
20 mA 100%
⑦
Level
④
Space
⑧
Low calibration point
Options
Reference point
Description
*
Level
Low Calibration Point
measured as a percentage of the
difference between High Calibration
Point and Low Calibration Point
Space
High Calibration Point
Distance
Sensor reference point measured as a percentage of Low
Calibration Point
Volume
converts a level measurement to a volume output
Manual
a)
(LUI only)
allows
mA
Output Value (2.6.6.)
to be set to a user-defined value
a)
Current Output Function must be set to
Manual
before modifying
mA Output Value (2.6.6.).
Remember to restore the previous Current Output Function setting after modifying mA Output
Value.
To view the mA reading in the secondary region of the LCD, press on the handheld
programmer.
To modify Current Output Function via SIMATIC PDM:
● Open the menu
Device – Select Analog Output
. See Select Analog Output via SIMATIC PDM
(Page 81) for more detail.