Mercury II 5000 Encoders

Ultra-High Resolution Encoders for Demanding Motion Systems

The Mercury II 5000 Series delivers exceptional resolution, accuracy, and signal quality in a compact optical encoder platform. With programmable resolutions from 5 µm down to 1.2 nm and accuracy up to ±1 µm, it provides smooth velocity control and precise position feedback for high‑performance motion applications.

The miniature sensor head outputs fully digital signals directly from the encoder, and the same sensor works with tape or glass scales, in both linear and rotary formats. This combination of performance, robustness, and versatility makes the Mercury II 5000 an ideal choice for advanced automation, semiconductor, metrology, and medical systems.

Key Specifications

  • Resolution: Programmable from 5 µm to 1.2 nm
  • Outputs: A‑quad‑B, Index, Dual Limits and Alarm, or High‑Speed Serial with Limits
  • Scale Options: Tape or glass, linear or rotary

Available Models

Mercury II 5000 Encoder Specifications
MII5800Si Encoder Models –

High‑Speed Serial output including Limits; programmable resolution from 5 µm to 1.22 nm; up to 268 M CPR.
MII5800 Encoder Models –

A‑quad‑B output with Index and Limits; programmable resolution from 5 µm to 1.22 nm; up to 268 M CPR.
MII5700 Encoder Models –

A‑quad‑B output with Index and Limits; programmable resolution from 5 µm to 5 nm; up to 65 M CPR.
MII5500 Encoder Models –

A‑quad‑B output with Index and Limits; programmable resolution from 5 µm to 0.050 µm; up to 6.5 M CPR.
Mercury II 5000 encoder with digital output and miniature design