Specifications; Ambient Operating Temperature - Siemens SITRANS LR400 Quick Start Manual

SITRANS LR 400
The SITRANS LR 400 is to be used only in the manner outlined in this manual, otherwise
protection provided by the equipment may be impaired.
The SITRANS LR 400 is a long-range FMCW radar level instrument. A liquids version (7ML5421)
is available for use in liquids storage, performing well on low dielectric liquids or sticky
materials requiring a purging unit. A solids version (7ML5420) incorporates the Easy Aimer
design for use in solids, especially conditions of extreme dust.
The SITRANS LR 400 supports HART,

Specifications

Ambient/Operating Temperature
flange
temperature
WARNING: Internal temperature must not exceed 85 °C (185 °F)!
Power
• 120 to 230 V AC, ±15%, 50/60 Hz, 6 W (12 VA)
or
• 24 V DC, +25/-20%, 6 W (optional)
1.
HART® is a registered trademark of the HART Communications Foundation.
* -20 °C (-4 °F) temperature rating available on SITRANS LR 400 with ATEX rating.
Page EN-2 SITRANS LR 400 – QUICK START MANUAL
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or PROFIBUS PA (optional).
ambient temperature*: -40 to 65 °C
internal enclosure temperature:
max. 85 °C (185 °F)
process temperature*: -40 to 200 °C (-40 to 392 °F)
*optional -40 to 250 °C (-40 to 482 °F) with
temperature extension (liquids version only)
(-40 to 149 °F)
hand programmer
A5E32007509