Displacement sensor is a device which tracks the positioning of two points. A linear displacement sensor is the best way to make an exact location. Few displacement sensors tracks linear movement and others track rotational movement. Displacement sensors of various types appoint different types of science and some are better at work when compared to others. Displacement sensors get an additional help from the mechanical or electrical field which helps in relating to the relative quality with the response in return. Displacement sensors are used by engineers in many field of work like, monitoring of applications and many others.

Displacement sensors are of various types. Some of the main types are as follows:-

1. Magnetic displacement sensors are those that determine the displacement measures along with the change in corresponding magnetic flux. These sensors are charged up with permanent magnets or electromagnets which are efficient for rotational or linear applications.

2. Displacement transducers are those which employ some type of induction coils or linear variable differential transformers. This helps as a great component in machines.

3. Optical displacement sensors are of varieties. Some of them use photodectors and reflectors while others can be specialized to measure the thickness of materials which are transparent.

4. Laser displacement sensors use triangulating calculations and reflectors for its calculations.