An absolute sensor determines the current position of its shaft and converts the information as a pulse.
A feature of such encoder is possibility to determine the absolute position without a reference point. Each mark on disk provides a unique code that helps to immediately define current position.
When device will be turn on again, it restore to the previous position and instantly report about current location. Absolute encoders can be divided into two types according to the design: single turn and multi turn.
It depends on the number of code disks in construction. A multiturn sensor may have multiple wheels. Such design allows it to receive data from more than one turn. Additional disks also allow calculating more parameters according to the tasks.
By operation principle absolute sensors can be capacitive, optical, magnetic and mechanical.
On our site you can find a wide range of absolute encoder models produced by ELTRA
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