Absolute Angle Sensors

Absolute position sensors are very different from incremental sensors.

Absolute angle sensors.

With mechanical gearing of one disc to second disc it is possible to define position over multiple revolutions. Absolute angle encoders and optical angle sensors as well as potentiometers the measurement of rotation angles in demanding applications often requires a technical adaptation of the angle sensor to the specific application environment. A position sensor is a sensor that facilitates measurement of mechanical position. For this a unique code pattern is assigned to each angle increment.

Absolute encoders generate information about position angle and rotation counts in type specific angle steps. Absolute versions of transmissive encoders incorporate multiple tracks light sources and sensors which completely define position within a revolution. Common types of position sensors include. The posirot magnetic angle sensors of the pras prds series are based on a contact free and absolute measurement principle.

When you say incremental position sensor it implies a change in position. A position sensor may indicate absolute position location or relative position displacement in terms of linear travel rotational angle or three dimensional space. The position sensing element is a permanent magnet. Each code pattern forms a unique reference and is therefore an absolute position.