There are many optical channel reticles on the optical code disk of the absolute encoder, and each reticle is arranged in turn as 2 lines, 4 lines, 8 lines, and 16 lines. In this way, at each position of the encoder, by reading the pass and dark of each reticle, a group of unique binary codes (Gray code) from the zero power of 2 to the n-1 power of 2 can be obtained, which is called an n-bit absolute encoder. This type of encoder is memorized by an optoelectronic encoder. Absolute encoders are more expensive, precise, and larger than incremental encoders. The absolute encoder is determined by the mechanical position for encoding, without the need for memory, reference points, and continuous counting. When the position needs to be known, its position can be read. The absolute encoder has a range and is suitable for use on some special machine tools.
external diameter φ 38mm, shaft diameter φ 6mm
Adopting magnetic induction
Resistant to dirt, vibration, and oil
