Non-Contact Absolute Linear Encoder, 20~29 Bit

A linear encoder is a position sensor used to measure linear displacement or linear motion. It converts the motion of an object along a straight path into an electrical signal that a control system can read. Linear encoders typically consist of a scale (or measuring track) and a read head, and are widely used in CNC machine tools, precision positioning systems, and automated manufacturing equipment.

Encoders are generally classified into several types based on their measurement methods and technologies. The most common categories include rotary encoders and linear encoders (classified by motion type). Based on signal output, encoders can be divided into incremental encoders and absolute encoders. Based on sensing technology, encoders can also be divided into optical encoders and magnetic encoders. Each type of encoder differs in terms of accuracy, durability, and environmental adaptability.

The main difference lies in the type of motion they measure. Linear encoders measure linear displacement, while rotary encoders measure rotational motion or the angular position of a shaft. Linear encoders are typically used for precise positioning in machine tools and measurement systems, while rotary encoders are typically mounted on motors, shafts, or rotating equipment to monitor speed, direction, and angular position.