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: Communications via Foundation Fieldbus
- C Appendix C: Certificates and support
- 13 List of abbreviations
- 14 LCD menu structure
- Glossary
- Index
Appendix A: Technical reference
A.3 Maximum Process Temperature Chart
SITRANS LR250 (FOUNDATION FIELDBUS)
240 Operating Instructions, 01/2014, A5E32221411-AB
A.3
Maximum Process Temperature Chart
WARNING
Internal temperature must not exceed +80 ° C (+176 °F).
Note
•
The chart below is for guidance only.
•
The chart does not represent every possible process connection arrangement. For
example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic
vessel surface.
•
The chart does not take into consideration heating from direct sunshine exposure.
Maximum Process Temperatures versus allowable ambient
①
Internal enclosure temperature
②
Ambient temperature
③
Process temperature (at process
connection)
Where the chart does not apply, please use your own judgement regarding the use of SITRANS
LR250.
If the internal temperature exceeds the maximum allowable limit, a sun shield or a longer nozzle
may be required.
See
Minimum Value (3.3.1.)
and
Maximum Value (3.3.2.)
to monitor the Internal Temperature.