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
121
Material Level (2.5.1.)
Note
The default setting depends whether your dev
ice is a standard or NAMUR NE 43-compliant
device.
Defines the mA output to use when the Fail-safe timer expires.
STANDARD DEVICE
Options
HI
20.5 mA (max. mA Limit)
LO
3.8 mA (min. mA Limit)
*
HOLD
Last valid reading (default 22.6 mA)
VALUE
User-selected value [defined in Fail-Safe mA Value (2.5.3.)]
NAMUR NE 43-COMPLIANT DEVICE
1)
Options
HI
20.5 mA (max. mA Limit)
LO
3.8 mA (min. mA Limit)
HOLD
Last valid reading
* VALUE User-selected value [defined in
Fail-Safe mA Value (2.5.3.)
: default
3.58 mA]
1)
Orderable option
LOE Timer (2.5.2.)
Note
When a Loss of Echo occurs Material Level (2.5.1.)
determines the material level to be
reported when the Fail
-safe timer expires. See Loss of Echo (LOE) (Page 226)
for more
detail.
Sets the time to elapse since the last valid reading, before the Fail-safe Level is reported.
Values
Range: 0.00 to 7200 seconds
Default: 100 s