In this video, we explain a critical concept for applying Linear Variable Differential Transformers (LVDTs): understanding mechanical stroke, electrical (calibrated) stroke, pretravel, and overtravel. LVDTs are trusted for accurate, repeatable linear position measurement—but correct system design requires knowing which portion of the stroke produces calibrated, linear output and which portions serve as protective margins. You’ll learn:
- The difference between mechanical stroke and electrical (calibrated) stroke
- What pretravel and overtravel are and why they exist
- Why measurements should only be taken within the electrical stroke
- How pretravel and overtravel help protect the sensor from misalignment or overshoot
- Best practices for system setup, mechanical stops, and calibration
Understanding these concepts helps ensure accurate measurements, prevents sensor damage, and extends service life in industrial and test applications. For additional technical resources, pricing, or application support, contact our engineering team.