Absolute linear encoder I Optical I Gurley I VL18

Absolute linear encoder | Optical | VL18

  • 1-μm resolution over 1 meter of travel, or ¼-μm resolution over 250 mm.
  • Three accuracy grades available
  • LED illumination for long life (>100,000 hours)
  • Differential photo-detectors for stable signals
  • Small number of wires from the encoder
  • Differential output for noise immunity


The Model VL18 combines the opto-mechanical simplicity and ruggedness of an incremental encoder with the interfacing ease of an absolute encoder. Utilizing Gurley's unique Virtual Absolute technology, the VL18 system is less expensive and more reliable than any conventional absolute encoder of comparable resolution and accuracy. Compared with an incremental encoder, the VL18 system provides greater system reliability and minimizes homing time.

Attribute NameAttribute Value
Documentation from Manufacturer
Output Signal Type
Measuring Principle
Measuring length (mm)
1038, 252
Resolution (µm)
1, 1/4
Accuracy (µm)
±3, ±5, ±10
Speed (m/sec)
1, 0.6
Differential Line Driver
Protection Rating
Special Requirements
Not specified



Sweden, Stockholm, Sigtunagatan 15, 11322.

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