Operating Instructions

Table Of Contents
11.3 Interface
Analog output Signal range 4 to 20 mA (± 0.02 mA accuracy) upper limit 20 to 23 mA adjustable
Fail signal 3.6 mA to 23 mA [For more details, see Fail-safe Mode] (Page 232)
Communication:
HART
1)
Load 230 to 600 Ω, 230 to 500 Ω when connecting a coupling module
Max. line length multi-wire: ≤ 1500 m (4921 ft)
Protocol HART, Version 5.1
Configuration Remote Siemens SIMATIC PDM or AMS Device Manager (PC)
Local Siemens infrared handheld programmer, or HART handheld communicator
Display (local)
2)
graphic LCD, with bar graph representing level
1)
See A.6.3 for details on version exclusions
2)
Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F).
Curve 2 (Flameproof, Increased Safety, Explosion-proof) (Page 246)
Technical data
11.3 Interface
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 167