Siemens Sitrans LR250, Руководство по эксплуатации, Страница: 186 / 306

Technical data
11.5 Environmental
SITRANS LR250 (PROFIBUS PA)
184
Operating Instructions, 08/2014, A5E32221386-AC
11.5 Environmental
Note
•
For the specific configuration you are about to use or install, check transmitter nameplate
and see Approvals (Page 185).
•
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
The maximum temperature is dependent on the process connection, antenna materials, and
vessel pressure. For more detailed information see Maximum Process Temperature Chart
(Page 242) and Process Pressure/Temperature derating curves.
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)
Hygienic encapsulated antenna (HEA) - 40 to +170 °C (−40 to +338 °F)
with FKM seals used on process
connection: -20 to +170 °C (-4 to +338
°F)
with EPDM seals used on process
connection: -40 to +120 °C (-40 to +248
°F)
Pressure (vessel) Refer to process connection tag and
Process Pressure/Temperature derating
curves.