Displacer Level Transmitter Technology Provides Reliable Measurement

For liquid level measurement in challenging process operations, displacer level transmitter technology is a safe, reliable solution. Displacer level transmitters have significant advantages over competitive technology, such as torque tubes or differential pressure transmitters. Magnetrol® has developed a displacer transmitter, the E3 Modulevel®, for level, density and clean interface measurement in high-temperature and other extreme process environments.

E3 Modulevel® Design

displacer level transmitter

The E3 Modulevel® displacer transmitter

The E3 MODULEVEL operates using range spring technology, which offers increased output stability. The liquid levels of the process media act on the range spring displacer, which causes vertical motion of the core within a linear variable differential transformer, or LVDT. As the core position changes, voltages are induced across the secondary windings of the LVDT. These signals are processed in the electronic circuitry and converted to a useable output signal. The enclosing tube of the displacer level transmitter acts as a static isolation barrier between the LVDT and the process media.

Configuring the E3 MODULEVEL only requires two configuration parameters: operating temperature and specific gravity. This makes it easy and fast to switch the product being measured in the tank and reconfigure the transmitter. The software can be programmed in a wet or dry environment, which can save time and money.


The adaptability of the E3 MODULEVEL displacer level transmitter makes it suitable for a wide range of applications, including:

  • Condensate receiver tanks
  • Distillation towers
  • Chemical liquid extraction
  • Crude dewatering
  • Distillation columns
  • Catalytic crackers
  • Hydrocracking

More Information

MAGNETROL recently produced a video with more details on the E3 MODULEVEL, including further information about safety features and advantages over competitive technologies. In addition, visit the MAGNETROL site on displacer level transmitter technology to learn more about our products.


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