Siemens SITRANS LR460 FMCW Long-Range Radar Level Transmitter for Dry Solids

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Four-wire, 25 GHz FMCW radar level transmitter for continuous level monitoring of solids in ranges up to 328 feet (100 meters), especially those with extremely low dielectrics, extreme dust, or high temperatures. 8° or 11° beam angle. Stainless steel horn antennas with aluminum enclosure. HART or Profibus PA communications. Good for process temperatures to 392°F (200°C) and media with dielectric constant greater than 1.4.

This product has been discontinued by the manufacturer. See Siemens LR500 radar level transmitters for a suitable replacement.

Territory Restriction: Due to our territory agreement with Siemens, Lesman is the authorized Siemens sales representative in Illinois, Indiana, Wisconsin, Eastern Missouri, Michigan's Upper Peninsula, Paducah KY area, Oregon, Washington, Northern Idaho, Western Montana, Alaska, and Hawaii. If you are outside that area, you can find your local sales office or get technical assistance by calling 800-365-8766 or 972-522-4500, or sending an email to

Siemens SITRANS LR460 is a four-wire FMCW radar level transmitter for continuous level measurement of dry solids. It offers a high signal-to-noise ratio and advanced signal processing for reliable operations. It features an integral Easy Aimer to optimize signal quality when the unit is installed on sloped surfaces. The SITRANS LR460 is virtually unaffected by atmospheric or temperature conditions within the process or storage vessel. It can be ordered with an optional dust cap or air purging for sticky solids applications.

  • Key applications include long-range dusty applications, cement powder, fly ash, coal, flour, grain, and plastics, and dry bulk materials with dielectric constant greater than 1.4
  • Four-wire 25 GHz FMCW radar level transmitter
  • Good for continuous monitoring from 1.15 to 328 feet (0.35 to 100 Meters)
  • 8° beam angle with 4" horn, 11° beam angle with 3" horn
  • Patented Sonic Intelligence signal processing automatically detects obstructions and suppresses their signals
  • Self-guided quick start wizard for plug-and-play startup
  • Program using Siemens' infrared intrinsically safe handheld programmer, SIMATIC PDM software and a PC, or HART handheld programmer
  • Diecast aluminum enclosure rated IP67/NEMA 4X/NEMA6, 304 stainless steel flange and horn, PTFE emitter
  • Integral Easy Aimer for optimal signal quality on sloped surfaces and reliable dry solids level measurement
  • Optional dust cap or air purging feature for sticky solids applications

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Model Selection Guide

Use this table to find the right model for your application. Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

Make one choice from each table section. A complete catalog number will look like this: 7ML5426-0 _ _ _ 0-_ _ _ 0

Description Catalog
SITRANS LR460 Four-Wire 25.2 GHz FMCW Radar 7ML5426-
Universal Flat Faced 3" (80mm)
Universal Flat Faced 4" (100mm)
Universal Flat Faced 6" (150mm)
0A _ _ _-
0B _ _ _-
0C _ _ _-
Antenna 3" Horn, Fits 3" Nozzles
4" Horn, Fits 4" Nozzles
4" Horn, 200 mm Extension
_ _ A _ _-
_ _ F _ _-
_ _ H _ _-
Purge None
Purge (Self Cleaning) Connection
_ _ _ 00-
_ _ _ 10-
Communication 4-20 mA, HART®
Profibus PA
0 _ _ _
1 _ _ _
Cable Inlet
100 to 230 VAC, Two 1/2" NPT Cable Inlets
24 VDC, Two 1/2" NPT Cable Inlets
_ B _ _
_ D _ _
Approvals General Purpose CE, CSAus/c,
CSA/FM Class II, Div 1, Gr E-G, Class III
_ _ A0
_ _ B0
_ _ C0
Accessories Intrinsically Saafe Infrared Handheld Programmer
USB HART® Modem for Use with PC and SIMATIC PDM
PTFE Dust Cover for 3" Horn
PTFE Dust Cover for 4" Horn
More Information
Point or Continuous Level Continuous
Level Media Dry Solid
Level Technology Radar
Measuring Range 1.15 to 328 feet (0.35 to 100 Meters)
Wetted Materials 304 stainless steel flange and horn, PTFE emitter
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