Top resolution from robust magnetic encoders
A
Motor Technology product story
Edited by the Engineeringtalk editorial team
Oct 23, 2003
A new range of magnetic encoders able to deliver up to 10,000 pulses per revolution are available for use in extreme environments where optical encoders may not be an option.
A new range of magnetic encoders able to deliver up to 10,000 pulses per revolution are available for use in extreme environments, where optical encoders may not be an option.
Manufactured by Lenord and Bauer, the GEL range of magnetic, incremental encoders combine the high-resolution abilities of an optical system with the rugged reliability of a magnetic design.
Lenord and Bauer's encoders measure the changes in magnetic fields using a magnetically controllable semiconductor resistor, rather than a Hall-effect sensor or a giant magnetoresistance sensor used by competing designs.
As a result, the best 58mm encoder available from an alternative manufacturer will deliver 1280 pulses per revolution, whereas a 58mm GEL encoder will deliver 5320.
This is vital for applications that require a high degree of accuracy but where a dirty or hazardous environment would be a problem for optical encoders.
The range includes solid and hollow shaft encoders, high load bearing units up to 500N, an operational temperature range up to 120C and an Ex rated unit.
Typical applications for these encoders includes machines for the processing of steel, wood, rock, textiles and plastic, as well as use in tunnelling equipment, storage systems and rail vehicles.
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