Absolute hollow-shaft rotary encoder Netzer Precision Motion Sensors

DS-90 Rotary, Sine/Cosine Absolute,
Electric Encoder™
The DS-90 is a member of the DS series, which is based on Netzer Precision Electric Encoder™ technology. This, state-of-the-art, technology offers many features, some unparalleled:
- Lowest profile (? 10 mm)
- High precision, absolute position output
- High tolerance to temperature, shock and moisture
- Tolerance to EMI, RFI, and to magnetic fields
- Very low weight
The holistic (1) structure of the Electric Encoder™ provides generous mounting tolerance, thus obviating the need for internal ball bearings. The absence of bearings, flexible couplers, glass disc, light sources and detectors, along with very low power consumption, make the DS-90 encoder virtually failure free.
The internally shielded, DC operated DS-90 includes an electric field generator, a field receiver, a sinusoidally-contoured dielectric rotor, and processing electronics. The coarse/fine, analog output signals are proportional to the sine and cosine of the rotation angle.
Demanding applications suited to the DS-90 include: Aerospace, medical, instrumentation, automation, etc.

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