Siemens SITRANS LR250 Horn Antenna Radar Level Transmitter for Liquids and Slurries

Prices starting at:
$2,525.00
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SKU
7ML5431

Two-wire 25 GHz pulse radar level transmitter for continuous level monitoring of liquids and slurries in ranges up to 66 feet (20 meters). 8°, 10°, 15°, or 19° beam angle. Stainless steel threaded or flanged horn antenna. 4-20 mA output plus HART communications standard. Good for process temperatures to 392°F (200°C), pressures to 560 PSIG, and media with dielectric constant greater than 1.6.

Siemens SITRANS LR250 is a two-wire, 25 GHz radar level transmitter for continuous monitoring of liquids and slurries in storage and process vessels, including high temperature and pressures. Its graphical user interface and Quick Start Wizard make configuration and operation simple. It also displays echo profiles for easy diagnostic support.

  • Key applications include liquid bulk storage tanks, process vessels, vaporous liquids, high temperatures, low dielectric media, and applications with functional safety requirements
  • Ideal for storage vessel applications, even those with temperatures to 392°F or pressures to 580 PSIG
  • Two-wire 25 GHz pulse radar level transmitter
  • Short 50 mm (2 inch) blanking distance for improved minimum measuring range for continuous monitoring from 2 inches to 65 feet (0.05 to 20 Meters)
  • 8°, 10°, 15°, or 19° beam angle, depending on horn size
  • Good for liquids or slurries with dielectric constant greater than 1.6
  • Process Intelligence signal processing for improved measurement reliability and Auto False Echo Suppression for fixed obstructions
  • Program using Siemens' infrared intrinsically safe handheld programmer, SIMATIC PDM software and a PC, or HART handheld programmer
  • Startup with as few as two parameters for basic operation
  • NEMA 4X/NEMA 6/IP67/IP68 rated aluminum enclosure, 316L stainless steel antenna and process connection
  • CE, CSA, FM, ATEX approvals available
  • Available with SIL2 Functional Safety certificate for use in accordance with IEC 61508 and IEC 61511
  • LR250 is also available with a PVDF antenna, flanged encapsulated antenna for harsh or corrosive applications, and an antenna specifically for hygienic 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: 7ML5431-_ _ _ _0-_ _ _ _.

Description Catalog
Number
SITRANS LR250 Two-Wire 25GHz Pulse Radar Level Transmitter 7ML5431-
Antenna
Material
316L SS Horn Antenna and Connection, PTFE Emitter, FKM Seal 
316L SS Horn Antenna and Connection, PTFE Emitter, FFKM Seal
0_ _ _ _-
1_ _ _ _-
Process
Connection
Type
1.5" NPT Threaded 316L Taper for 1.5" Horn Antenna
2" NPT Threaded 316L Taper
2" Class 150 316L Flange
3" Class 150 316L Flange
4" Class 150 316L Flange
_ AA _ _ -
_ AD_ _ -
_ BD_ _ -
_ BE_ _ -
_ BF_ _ -
Communication 4-20 mA, HART® (Startup at <3.6 mA)
PROFIBUS PA
_ _ _20-
_ _ _10-
Enclosure Epoxy-Painted Aluminum with Two 1/2" NPT Inlets 0_ _ _
Antenna 1.5" 316L Stainless Steel Horn
1.5" 316L Stainless Steel Horn with 100 mm Extension
2" 316L Stainless Steel Horn (Fits 2" ASME Nozzles)
2" 316L Stainless Steel Horn with 100 mm Extension
3" 316L Stainless Steel Horn (Fits 3" ASME Nozzles)
3" 316L Stainless Steel Horn with 100 mm Extension
4" 316L Stainless Steel Horn (Fits 4" ASME Nozzles)
4" 316L Stainless Steel Horn with 100 mm Extension
_ A _ _
_ E _ _
_ B _ _
_ F _ _
_ C _ _
_ G _ _
_ D _ _
_ H _ _
Approvals General Purpose CE, CSA, FM, FCC
Intrinsically Safe CSA.FM, FCC  [2]
Non-Incendive CSA/FM, FCC
Explosion Proof FM
_ _ A _
_ _ B _
_ _ D _
_ _ H _
Pressure 7.5 PSI (0.5 bar) Max. Pressure Rating _ _ _ 1
SIL2 [4] Functional Safety, SIL 2 Compliance Cert ,Z-C20
Accessories Intrinsically Safe Handheld Programmer
USB HART Modem for Use with PC and SIMATIC PDM
7ML1930-1BK
7MF4997-1DB

Notes:

[1] For 1.5" horn antenna only.
[2] Intrinsic safety barrier required.
[3] NO IS barrier required. Available only with HART communications option.
[4] For HART models with general purpose or intrinsically safe approvals only.

More Information
HART Yes
SIL-Rated Yes
Point or Continuous Level Continuous
Level Media Liquid, Slurry
Level Technology Radar
Measuring Range 2 Inches to 65 Feet (0.05 to 20 Meters)
Wetted Materials 316L Stainless Steel

To build your complete part number, make a selection from each table section below. Your completed model and its price will appear below the table. If you don't see the options you need, call us.

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