Magnetic Rotray Encoder！

A magnetic encoder consists of two parts: a rotor and a sensor. The rotor turns with the shaft and contains alternating evenly spaced north and south poles around its circumference. The sensor detects these small shifts in the position N>>S and S>>N. There many methods of detecting magnetic field changes, but the two primary types used in encoders are: Hall Effect and Magneto resistive. Hall Effect sensors work by detecting a change in voltage by magnetic deflection of electrons. Magneto resistive sensors detect a change in resistance caused by a magnetic field.

Magnetic devices designed effectively eliminate the first two failure modes and offer an opportunity to reduce bearing failures as well. Magnetic encoders do not make errors due to contamination because their sensors detect variations in magnetic fields imbedded in the rotor and oil, dirt and water do not affect these magnetic fields.

Previous：Roundss magnetic speed sensor 10000pulse speed measuring sensor Ring encoder
Next：Roundss low cost digital draw wire sensor Position sensor 4-20mA Draw wire analog sensor