David S. Nyce

David S. Nyce

David S. Nyce

Stories by David S. Nyce

The LVDT: A Simple and Accurate Position Sensor

The linear variable differential transformer (LVDT) has been around for many years, and remains a popular sensing technology for absolute position measurement. It is relatively simple, operates over a wide temperature range, has extremely fine resolution, never wears out, and has high reliability. It is well suited for linear measurements over ranges from microns to several inches, but becomes less cost-effective at stroke lengths greater than ?3 in.