Inductive Angle Encoders

Celera Motion's Zettlex position sensor (IncOders) from Electromate use non-contact, inductive technology for precision angle measurement.

1912np Zettler

Rather than the bulky transformers of traditional inductive sensors, the Celera Motion Inc0der sensors use printed circuits. This enables compact, accurate, lightweight, reliable and robustness with no contacts, no delicate parts, and no maintenance. The inductive encoders have two main parts—a stator and a rotor—each shaped like a flat ring. The large bore makes it easy to accommodate through-shafts, slip-rings, optical-fibers, pipes or cables. The stator is powered and the rotor is passive. The stator contains the electronics to receive power and generate an output signal. The output signal from the stator shows the true absolute angular position of the rotor relative to the stator without the need of any motion. The encoders do not require compliant or special couplings and the rotor and stator can simply be screwed to the host product. Precise mechanical mounting is not required and there are no bearings. The units are generally unaffected by foreign matter and IP67 rated versions are available. Unlike capacitive devices, there is no need to ground the rotor or stator. Robust, hard-anodized aluminum alloy housings and monolithic constructions are used throughout. Due to the non-contact, non-wearing parts, there is no need for periodic replacement, service or maintenance.

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