SIEMENS The Probe Ultrasonic Level Transmitter


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Siemens “The Probe”: A short-range integrated ultrasonic level transmitter designed for precise measurement of liquids and slurries in both open and closed vessels. The transducer, crafted from PVDF copolymer, ensures compatibility with a diverse range of applications. Easy installation and maintenance make “The Probe” well-suited for industries such as food, beverage, and pharmaceuticals, where cleanliness is paramount.


Reliable level data is achieved through the implementation of Sonic Intelligence echo processing algorithms. A sophisticated filter distinguishes between true echoes and false echoes caused by acoustic or electrical noise, as well as agitator blades in motion. The ultrasonic pulse propagation time to the material and back is temperature-compensated, providing accurate distance measurements for display, analog output, and relay actuation.

  • Easy to install, program, and maintain
  • Accurate and reliable
  • Sanitary models available
  • Sonic Intelligence echo processing
  • Integral temperature compensation

Product Data Sheet – Siemen The Probe Ultrasonic Level Transmitter

Operation Manual – Siemen The Probe Ultrasonic Level Transmitter


Application Ultrasonic Level Transmitter

(Measuring Range)

0.25 … 5 m (0.8 … 16.4 ft)
Output 4 … 20 mA
Measuring Accuracy 0.25 % of measuring range (in air)
Operating conditions -20 … +60 °C (-4 … +140 °F)
Degree of Protection Type 4X, Type 6, IP66, IP68
Weight 1.5 kg (3.3 lb)
Electrical Connections 2 inlets for PG 16 or ½” NPT cable glands
Explosion Protection NA
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SIEMENS The Probe Ultrasonic Level Transmitter

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