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SIEMENS SITRANS LR250 Hygienic Encapsulated Antenna Radar Level Transmitter

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Siemens SITRANS LR250 Hygienic Encapsulated Antenna: A cutting-edge 2-wire, 25 GHz pulse radar level transmitter engineered with sanitary and hygienic approvals for continuous monitoring of liquids, slurries, and pastes within the food, beverage, chemical, and pharmaceutical industries, offering a range of up to 20 meters (66 feet) (dependent on antenna).

BENEFITS

Equipped with a graphical local user interface (LUI), the LR250 streamlines setup and operation with an intuitive Quick Start Wizard and echo profile displays for diagnostic support. Startup is effortless with the Quick Start Wizard, requiring only a few parameters for basic operation.

With its 25 GHz frequency, the LR250 generates a narrow, focused beam, enabling the use of smaller antenna options and reducing sensitivity to obstructions. Its unique design allows for safe and straightforward programming using the Intrinsically Safe handheld programmer, eliminating the need to open the instrument’s lid.

The LR250 excels in measuring small vessels and tanks up to 20 meters (66 feet) on materials with a dielectric constant (dk) greater than 1.6, ensuring superb accuracy in level monitoring applications.

  • Fully encapsulated horn antenna design with FDA approved and USP Class VI compliant, TFM 1600 PTFE lens
  • < 0.8 μ Ra surface finish for maximum cleanability and hygiene requirements commonly required in sanitary environments
  • Chemically resistant TFM 1600 PTFE lens is also suitable for aggressive or corrosive materials
  • Approved device in accordance with 3-A, EHEDG EL Class I and/or EHEDG EL Aseptic Class I
  • Cost effective replacement for transmitters made of exotic materials
  • Graphical local user interface (LUI) makes operation simple with plug-and-play set-up using the intuitive Quick Start Wizard
  • Industry standard process connections including ISO 2852, DIN 11851, DIN 11864-1, DIN 11864-2, DIN 11864-3, and Tuchenhagen Varivent Type F and N
  • LUI displays echo profiles for diagnostic support
  • 25 GHz high frequency and 2 inch (50 mm) process connection/antenna allow for easy mounting
  • Insensitive to mounting location and obstructions, and less sensitive to nozzle interference
  • Communication using HART or PROFIBUS PA
  • Process Intelligence signal processing for improved measurement reliability and Auto False-Echo Suppression of fixed obstructions
  • Programming using infrared Intrinsically Safe handheld programmer or over a network using SIMATIC PDM, Emerson AMS, or Field Device Tools, such as PACTware or Fieldcare via SITRANS DTM.
  • Functional Safety (SIL 2). Device suitable for use in accordance with IEC 61508 and IEC 61511

Product Data Sheet – Siemen SITRANS LR250 Hygienic Encapsulated Antenna Radar Level Transmitter

Operation Manual – Siemen SITRANS LR250 Radar Level Transmitter with mA/HART

DETAILS

Application Radar Level Transmitter
Input

(Measuring Range)

Minimum Measuring Range:

50 mm (2 inch) from end of antenna

Maximum Measuring Range:

20 m (66 ft)

Output 4 … 20 mA
Measuring Accuracy > 500 mm from sensor reference point: 3 mm (0.118 inch)

< 500 mm from sensor reference point: 25 mm (1 inch)

Operating conditions -40 … +170 °C (-40 … +338 °F) at process connection

See Pressure/Temperature curves for more information

Degree of Protection Type 4X/NEMA 4X, Type 6/ NEMA 6, IP67, IP68
Weight Approx. 4.7 kg (10.4 lb) for 2″ ISO 2852 (smallest size)

Approx. 7.9 kg (17.4 lb) for DN 100 DIN 11864-2 (largest size)

Electrical Connections 2 x M20 x 1.5 or 2 x ½” NPT
Explosion Protection IECEx (Dependent on Configuration)
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SIEMENS SITRANS LR250 Hygienic Encapsulated Antenna Radar Level Transmitter
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