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Where is a LVDT Used?

Monday, January 18, 2021

No matter if you are in Aerospace, Medical, or Industrial Markets, Linear Variable Differential Transformers (LVDTs) are probably relied upon to measure movements. A LVDT is a go-to sensor for anyone who is looking for a highly-reliable, long life (MTBF - Mean Time Between Failure) durable, and efficient solution. They offer an accurate, fast response time and low maintenance, which makes it easier to manage them while they are in use. The following article is a closer look at LVDTs, as we dive into how they work, and where they are used.

How does a LVDT work?

A LVDT is used to measure linear motion which is then converted to an electrical signal. The design of an LVDT is cylindrical consisting of primary and secondary windings. The primary windings produce a magnetic field in the center of the transducer signaling the secondary windings. Any movement from the core at this point causes the signal to increase or decrease. The LVDTs moving core is frictionless and does not come into contact with other electrical components giving it a distinct advantage over other types of sensors.

Where is a LVDT used?

As mentioned, LVDTs are used in a variety of industries and for a variety of reasons. For instance, they are used in industries such as Aerospace and Defense, in which they are used for flight control actuators, on elevators, rudders, spoilers, landing gears, flaps, on parts of the engine, fly-by-wire, brake-by-wire, etc. They are used in oil and gas explorations, downhole drilling, where they are used for measuring the size of the drill hole that they drill for optimum size, and more. Some other industries they are used in include Industrial Markets, Medical, and Robotics Automation.

Application of LVDT Other Than Displacement

Generally speaking, LVDTs have two applications that can be used in a wide variety of situations and environments. One of the most common Linear Variable Differential Transformer applications is the measurement of displacement. This means that they are used to associate specific signals for any position of the core. This occurs via the use of electromagnetic coupling of an AC excitation signal. On the other hand, they can also be used as a secondary transducer. This is a somewhat common application for a LVDT. It means that LVDTs are also used to measure force, pressure, or weight.

Key Takeaways:

  • LVDTs are used because they are accurate, sturdy, reliable, and low maintenance.
  • LVDTs are used in a wide array of industries, such as Aerospace and Defense, Robotics Automation, Medical, and much more.
  • LVDTs work in the same manner as most other sensors. However, they are frictionless, making them preferable over other types of sensors.

Contact Sentech for LVDTs

If you are looking for a premium quality Linear Variable Differential Transformer sensor, you've come to the right place. Here at Sentech, we offer a wide variety of LVDTs and custom LVDT capabilities and designs. With over 30 years of experience, Sentech has been known for being a world-class manufacturer for products such as LVDTs for quite some time. As a global leader in the design and manufacture of position sensors, shopping with Sentech is always a step in the right direction. Interested in purchasing LVDTs, RVDTs, FASTAR sensors, HYDRASTAR sensors, or other related products? Contact us today for more information!

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