Ponton Industries


Process Instrumentation

Radar Level Transmitter

SITRANS LR250 is your first choice for liquid level measurement in storage and process vessels up to 66 feet (20 m). With its range of antennas, this transmitter can handle whatever you need. Flanged and hygienic encapsulated antennas mean corrosive or aggressive materials and hygienic or sanitary requirements are no challenge for this transmitter.

The all-rounder: Polypropylene lens antenna

  • Excels in most industrial applications at a budget-conscious price point
  • Lightweight polyester powder-coated horn yields a very high signal 
  • Highly corrosion-resistance polypropylene and FKM wetted materials for use in a wide range of chemicals with nominal pressure and temperature
  • Universal polymeric flanges offer exceptional value and fit DIN, ASME and JIS bolt patterns
> Catalog Sheet

The oil and gas specialist:      The 316 horn antenna

  • Featuring multiple sizes and pressure classes
  • PTFE emitter and FKM seal, optional FFKM seal for higher corrosion resistance
  • Flanges and threaded process connections to ASME/ANSI and DIN standards, typical in oil and gas applications
  • Highest temperature range to
    392 °F (200°C) 
  • Ideal for stilling wells and bypass pipes
> Catalog Sheet

The Extreme expert: FEA flanged encapsulated antenna with PTFE lens

  • Can handle extremely corrosive chemicals and high temperatures/pressures
  • Ideal for process control applications in the chemical industry
  • Easy to clean FDA-approved TFMTM PTFE lens
  • A cost-effective replacement for antennas made of exotic metal
> Catalog Sheet

The hygienic hero: HEA hygienic encapsulated antenna

  • Hygienic antenna suitable for dairy, breweries, and pharmaceutical industries
  • EHEDG and 3A approved design is easy to clean
  • 316L stainless steel and TFMTM PTFE wetted surfaces suitable for clean-in-place operations
  • Widest range of process connections
> Catalog Sheet


  • Easy setup with graphical HMI and Quick Start Wizard or remote access via EDD or DTM
  • Intrinsically safe infrared handheld programmer for local interface
  • Field proven with rugged encapsulated enclosure based on 10+ years of experience
  • Reliable readings with Process Intelligence advanced echo processing for reliable performance
  • Ready for digitalization with HART, PROFIBUS PA or FOUNDATION fieldbus for connectivity
  • The right antenna and process connection for the application with a wide range of antenna materials for all industries: Polypropylene, PTFE, PP, or 316L stainless steel



(polypropylene lens antenna)


(flange encapsulated antenna)


(hygienic encapsulated antenna)

Order No7ML543157ML54327ML5431
Range66 ft (20 m)66 ft (20 m)66 ft (20 m)66 ft (20 m)
Process temperatures176 °F (80 °C)338 °F (170 °C)392 °F (200°C)338 °F (170 °C)
Wetted materialspolypropylene, FKMTFMTM PTFE
316L stainless steel, PTFE, FKMTFMTM PTFE
Process connection types & sizesuniversal flanges 3"/80mm, 4"/100mm, 6"/150mmflanges 2", 3", 4", 6" Class 150 ASME B16.5, DN50, 80, 100, 150 PN10/161-1/2", 2" and 3" threaded. flanges 2", 3", 4", 6" Class 150 and 300 ASME B16.5, DN50, 80, 100, 150 PN10/16 and PN40ISO 2852 sanitary clamp, DIN 11864-1, DIN 11864-2, DIN 11864-3, DIN 11851, and Tuchenhagen Varivent Type F and N
ApprovalsCSA, FM, ATEX, IECEX, INMETRO, NEPSI, Ex-proof, Intrinsically safeCSA, FM, ATEX, IECEX, NEPSI, INMETRO, Ex-proof, Intrinsically safe, MarineCSA, FM, ATEX, IECEX, NEPSI, INMETRO,Ex-proof, Intrinsically safe, MarineCSA, FM, ATEX, IECEX, NEPSI, INMETRO, Ex-proof, Intrinsically safe, 3A, EHEDG