An LVDT transducer (Linear Variable Differential Transformer) is a highly accurate sensor used to measure linear displacement in demanding industrial environments. Known for their reliability and repeatability, LVDT transducers provide precise position feedback without mechanical contact, making them ideal for continuous monitoring applications.
If you are looking for a dependable solution for displacement measurement, LVDT sensors offer long term performance with minimal maintenance.
What is an LVDT Transducer?
An LVDT transducer is an electromechanical device made up of a primary coil, two secondary coils, and a movable ferromagnetic core. As the core moves within the coil assembly, it changes the electromagnetic coupling, generating a differential AC output signal that is directly proportional to position.
Because there is no physical contact between the core and the coils, LVDT displacement sensors operate without wear, ensuring consistent accuracy over time.
How LVDT Transducers Work
When the primary coil is energised, it induces voltage in the secondary coils. The position of the core determines the balance of this voltage:
- At the central (null) position, output is minimal
- As the core moves, voltage increases in one secondary coil and decreases in the other
- The resulting differential signal indicates both direction and magnitude of displacement
This linear response allows LVDT transducers to deliver highly accurate, repeatable measurements across a wide range of applications.
Why Use an LVDT Transducer?
LVDT sensors are widely used because they combine precision with durability. Key benefits include:
- High accuracy and repeatability - ideal for critical measurement applications
- Excellent reliability - performs consistently in harsh environments
- Resistance to contamination - suitable for use in vibration, moisture, and temperature extremes
- Long service life - designed for continuous industrial operation
For applications where measurement accuracy directly impacts performance or safety, LVDT transducers remain one of the most trusted solutions.
Common Applications of LVDT Transducers
LVDT displacement sensors are used across a wide range of industries:
- Manufacturing and quality control - dimensional measurement and in-line inspection
- Aerospace - flight control systems and structural monitoring
- Automotive testing - suspension analysis, component testing, and validation rigs
- Energy and power generation - valve position monitoring and hydraulic systems
- Industrial automation - precise position feedback in machinery and equipment
Wherever precise linear measurement is required, LVDT transducers provide dependable results.
Monitran LVDT Transducers
Monitran supplies a range of high quality LVDT transducers designed for industrial use. Manufactured from stainless steel and built for durability, our sensors are suitable for both standard and demanding environments.
Our range includes:
Each LVDT sensor is engineered to deliver consistent, accurate displacement measurement in real world operating conditions.
Speak to Our Team
Choosing the right LVDT transducer depends on your application, environment, and measurement requirements.
If you need guidance, our team can help you specify the most suitable solution - whether for a new installation or an upgrade to an existing system.
Contact Monitran today to discuss your LVDT requirements.
FAQs
What is an LVDT transducer used for?
An LVDT transducer is used to measure linear displacement or position with high accuracy. It is commonly used in industrial, automotive, and aerospace applications where precise movement measurement is required.
What are the advantages of an LVDT over other sensors?
LVDT transducers offer contact and non-contact measurement, high accuracy, long operational life, and reliable performance in harsh environments, making them more durable than many alternative displacement sensors.
How accurate is an LVDT transducer?
LVDT transducers can achieve very high accuracy, often measuring displacement down to microns. Their repeatability and linear output make them suitable for precision critical applications.