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Wear-free linear encoder offers 5µm resolution

19 August, 2014

Baumer has announced a bearingless linear encoder for measuring distances with a resolution down to 5µm. The MIL10 encoder uses a non-contact, wear-free magnetic sensing method with an almost unlimited service life.

The encoder consists of a sensing head and an adhesive magnetic tape encoded with 2mm-wide magnetic poles. Signals are processed in the sensing head, allowing the encapsulated sensors to provide IP66 and IP67 protection as standard. When used with a protective stainless-steel tape, the system can be applied in demanding environments containing dust, chippings or oil.

The 10 x 15 x 45.5mm shock-resistant sensor can operate in temperatures from –40 to +85°C. The maximum output frequency of 350kHz allows travel speeds of up to 25m/s.

The sensor's flexible polyurethane cable can handle frequently changing bending radii and is shielded and twisted in pairs. In conjunction with the sensor's metal housing, the cable protects against electromagnetic interference.

Baumer's bearingless linear encoder has an almost unlimited life

The encoder is available with a 5V DC supply and TTL /RS-422-compliant line drivers, and in a 10–30V DC variant with push-pull. Both output two inverted channels with 90° shift and generate an additional pole-periodic inverted index pulse.




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