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
Technical data
11.5 Environmental
SITRANS LR250 (FOUNDATION FIELDBUS)
202 Operating Instructions, 01/2014, A5E32221411-AB
11.5
Environmental
Note
•
For the specific configuration you are about to use or install, check transmitter nameplate
and see
Approvals (Page 203).
•
Use appropriate conduit seals to maintain IP or NEMA rating.
Location
indoor/ outdoor
Altitude
5000 m (16,404 ft) max.
Ambient temperature
−40 to +80 °C (−40 to +176 °F)
Relative humidity suitable for outdoor
Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure (see note
above)
Installation category I
Pollution degree
4
11.6
Process
Note
Th
e maximum temperature is dependent on the process connection, antenna materials, and
vessel pressure. For more detailed information see
Maximum Process Temperature Chart
(Page
240) and Process Pressure/Temperature derating curves (Page 241).
Temperature at process
connection
Standard Horn antenna
(Threaded or Flanged):
with FKM O-ring
−40 to +200 °C (−40 to +392 °F)
with FFKM O-ring
−20 to +200 °C (−4 to +392 °F)
2" NPT / BSPT / G Threaded PVDF antenna:
−40 to +80 °C (−40 to +176 °F)
Flanged encapsulated antenna (FEA)
-40 to +170 °C (−40 to +338 °F)
Pressure (vessel) Refer to process connection tag and
Process Pressure/Temperature derating
curves (Page 241).