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SIEMENS SITRANS LR250 Flanged Encapsulated Antenna Radar Level Transmitter

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Siemens SITRANS LR250 with flanged encapsulated antenna: A state-of-the-art 2-wire, 25 GHz pulse radar level transmitter meticulously engineered for continuous monitoring of liquids and slurries in storage and process vessels, even those containing corrosive or aggressive materials, with 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 produces 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

  • Fully encapsulated horn antenna design with FDA approved TFM 1600 PTFE lens for use in chemical and sanitary environments where aggressive and corrosive materials are used
  • Cost effective replacement for transmitters made of exotic materials
  • Graphical local user interface (LUI) makes operation simple with plug-and-play setup using the intuitive Quick Start Wizard
  • LUI displays echo profiles for diagnostic support
  • 25 GHz high frequency and 50 mm (2 inch) process connection/antenna allow for easy mounting
  • Insensitive to mounting location and obstructions, and less sensitive to nozzle interference
  • Short blanking distance for improved minimum measuring range to 50 mm (2 inch) from the end of the antenna
  • Communication using HART, 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
  • Suitable for API 2350

Product Data Sheet – Siemen SITRANS LR250 Level Transmitter

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

DETAILS

Application Radar Level Transmitter
Input

(Measuring Range)

Minimum Measuring Distance:

50 mm (2 inch) from end of antenna

Maximum Measuring Distance:

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 LR250 Flanged Encapsulated Antenna Pressure/Temperature curves for more information.

Degree of Protection Type 4X/NEMA 4X, Type 6/ NEMA 6, IP67, IP68
Weight Approx. 7 kg (15.43 lb) for 2″ Class 150 ASME B16.5 raised face flange (smallest size)

Approx. 17.7 kg (39.02 lb) for 6″ Class 150 ASME B16.5 raised face flange (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 Flanged Encapsulated Antenna Radar Level Transmitter
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