| What is An LVDT? | | | | The transformer's internal structure consists of a |
| The letters LVDT are an acronym for Linear Variable | | | | primary winding centered between a pair of identically |
| Differential Transformer, a common type of | | | | wound secondary windings, symmetrically spaced |
| electromechanical transducer that can convert the | | | | about the primary. The coils are wound on a |
| rectilinear motion of an object to which it is coupled | | | | one-piece hollow form of thermally stable glass |
| mechanically into a corresponding electrical signal. | | | | reinforced polymer, encapsulated against moisture, |
| LVDT linear position sensors are readily available that | | | | wrapped in a high permeability magnetic shield, and |
| can measure movements as small as a few millionths | | | | then secured in a cylindrical stainless steel housing. |
| of an inch up to several inches, but are also capable | | | | This coil assembly is usually the stationary element of |
| of measuring positions up to ±20 inches | | | | the position sensor. |
| (±0.5 m). | | | | |