Operating Instructions

Table Of Contents
a)
For use with 1.5" (40 mm) horn antennas only.
11.5 Environmental
Note
For the specific configuration you are about to use or install, check transmitter nameplate
and see Approvals (Page 171).
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 233) and Process Pressure/Temperature derating curves (Page 234).
Technical data
11.6 Process
SITRANS LR250 with mA/HART
170 Operating Instructions, 10/2019, A5E32220602-AG