How accurate are Zettlex sensors?

A number of parameters related to ‘accuracy’ are important for sensors. These are usually linearity, resolution, and repeatability. The exact parameters for any series of Zettlex sensors primarily depend on the sensor geometry and, in particular, any variability of the position of the target in axes other than the measurement axis. Other factors affect performance to a much lesser degree.

As a general rule:

  • Linearity is typically <<1% of full scale and can be <0.0001% of full scale
  • Resolution is typically <24 bits but most commonly 10, 12, 14, 16 or 18 bit
  • Repeatability is typically +/- 1 least significant bit of the quoted resolution

For our rotary IncOder sensor, we are able to improve linearity by up to 50% by pre-calibrating each stator-rotor pair. Please see our Ultra IncOder Series for more details.

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