LVDT Sensors

The LVDT sensors These are linear displacement transducers designed to measure position with high accuracy, high repeatability, and long lifespan. They are used in industrial applications, test benches, automation, metrology, and process control where a signal proportional to linear motion is required.

In Guemisa you will find LVDT displacement sensors for different mounting needs, measurement ranges and output types, including versions amplified, without amplification and LVDT angles.

What is an LVDT sensor and how does it work?

A LVDT (Linear Variable Differential TransformerIt is an electromechanical sensor that converts linear displacements into proportional electrical signals. Its operation is based on a primary coil and secondary windings arranged in a line, along with a movable ferromagnetic core that modifies the magnetic coupling according to its position.

When the core is centered, the output signal is zero or balanced. As it moves, the voltage induced in the secondary windings changes, generating a signal proportional to the movement within its operating range. Thanks to this principle, the LVDT transducers They offer a precise and stable linear position measurement.

Operating principle of an LVDT sensor for the precise measurement of linear displacement by means of electromagnetic coupling.

Main features of LVDT sensors

• High precision and repeatability in the measurement of linear displacement.
• Operation without direct mechanical contact, with less wear and longer lifespan.
• Robust design for industrial environments with vibrations, temperature or demanding conditions.
• Wide variety of formats, measurement ranges and output options.
• Excellent long-term stability even in continuous operation applications.
• High reliability in critical industrial applications.

Advantages of LVDT sensors compared to other technologies

LVDT sensors are distinguished by their high accuracy, repeatability, and long-term reliability. Thanks to their inductive operating principle, there is no electrical contact between the moving elements and the windings, minimizing wear and allowing for millions of operating cycles.

Compared to linear potentiometers, LVDT transducers offer greater stability in long-term applications and excellent resistance to vibration, humidity, and demanding industrial conditions. They also provide a highly repeatable signal for high-precision control and monitoring applications.

In applications where accuracy, robustness, and stability are critical factors, LVDT sensors continue to be one of the most widely used technologies for linear displacement measurement.

Typical applications of LVDT sensors

LVDT sensors are widely used in industrial machinery, test benches, automation, process control, and measurement systems where it is necessary to monitor linear displacements with high accuracy.

• Position control in industrial machinery.
• Test benches and laboratory equipment.
• Game control and displacement in bearings and bushings.
• Automation and control of industrial processes.
• Structural monitoring and measurement systems.
• Control of industrial actuators and valves.
• Metrology and calibration equipment.
• Research and development applications.

How to select an LVDT sensor?

To correctly select an LVDT sensor, it is necessary to consider the required displacement range, the necessary accuracy, the available mounting space, the type of output signal, and the operating environmental conditions.

It should also be assessed whether the application requires an amplified version, a model without electronic conditioning, or a specific solution for angular measurement.

The correct selection of the sensor allows for maximum accuracy, reliability and lifespan in each industrial application.

Technical advice for LVDT sensors

At Guemisa, we have experience in displacement measurement applications using LVDT technology. We can advise you on selecting the most suitable transducer based on the measurement range, required accuracy, environmental conditions, and the specific needs of your installation.

If you need help selecting the right LVDT sensor, we can advise you based on the displacement range, available space, output signal type, and actual working conditions.