LE18,20,25,30 Enclosed Linear Incremental Encoder - GURLEY Precision Instruments - #1

The Models LE18, LE20, LE25 and LE35 are optical incremental linear encoders designed for long life in medium to high-performance applications. The compact LE18 offers measuring lengths up to 1.2 m (48"); the almost-as-compact LE20 measures up to 1.5 m (60"); and the more robust LE25 and LE35 have a maximum measuring length of 3.2 m (126")*. All models have a reliable internal ASIC to provide resolution as fine as 0.1um after 4X quadrature decode in the user's circuitry. The output device for the quadrature square waves and index signal is an EIA/RS-422 balanced differential line driver. For users who prefer to provide their own interpolation, analog outputs are available as either 11-uAor 1-V signals.

Precision ball bearings allow the reading head to traverse the glass scale at speeds up to 1 m/s (40 in/s). The system is protected to IP53 by an aluminum extrusion and rubber sealing flaps.

The encoders are interchangeable with several popular competitive brands.

* For applications longer than 3.2 meters (126") please consult LE50 datasheet.