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SIEMENS SITRANS Probe LU Series Ultrasonic Level Transmitter

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Siemens SITRANS Probe LU: A highly efficient 2-wire loop powered ultrasonic transmitter designed for level, volume, and flow monitoring of liquids in open channels, storage vessels, and simple process vessels. With its versatility, the SITRANS Probe LU is well-suited for level monitoring in various industries including water and wastewater, chemical storage, and small bulk hoppers.

BENEFITS

Offering a range of 6 or 12 meters (20 or 40 feet), the SITRANS Probe LU utilizes Sonic Intelligence and Auto False Echo Suppression to ensure accurate measurements and fixed obstruction avoidance, with an impressive accuracy of 0.15% of range or 6 mm (0.25 inches), providing unmatched reliability.

Equipped with PROFIBUS PA (Profile version 3.0, Class B) communication capabilities, the Probe LU ensures seamless integration into your process control system.

The transducer options for the Probe LU include ETFE or PVDF to accommodate varying chemical conditions, while an internal temperature sensor compensates for temperature changes in applications with fluctuating material and process temperatures.

  • Continuous level measurement up to 12 m (40 ft) range
  • Easy installation and simple startup
  • Programming using infrared Intrinsically Safe handheld programmer, or SIMATIC PDM
  • Communication using PROFIBUS PA
  • ETFE or PVDF transducers for chemical compatibility
  • Sonic Intelligence signal processing
  • Auto False-Echo Suppression for fixed obstruction avoidance
  • Level to volume or level to flow conversion

Product Data Sheet – Siemen SITRANS Probe LU Ultrasonic Level Transmitter

Operation Manual – Siemen SITRANS Probe LU Ultrasonic Level Transmitter (HART)

DETAILS

Application Ultrasonic Level Transmitter
Input

(Measuring Range)

0.25 … 6 m (10 inch … 20 ft)

0.25 … 12 m (10 inch … 40 ft)

Output 4 … 20 mA
Measuring Accuracy ± the greater of 0.15 % of range or 6 mm (0.24 inch)
Operating conditions -40 … +85 °C (-40 … +185 °F)

0.5 bar g (7.25 psi g)

Degree of Protection Type 4X/NEMA 4X, Type 6/NEMA 6/IP67/IP68 enclosure
Weight 2.1 kg (4.6 lb)
Electrical Connections  x M20 x 1.5 cable gland or 2 x ½” NPT thread or 1 x M20 x 1.5 and 1 x ½” NPT
Explosion Protection IECEx (Dependent on Configuration)
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SIEMENS SITRANS Probe LU Series Ultrasonic Level Transmitter
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