Coping with axial offsets, excessive torque or the need for transmissive measurement and similar kinds of application is where non-contacting angle sensors – in which there is no direct contact between the rotating magnet and the actual measurement system – come into their own. The permanent magnet is normally attached by the customer to the rotating object (shaft), with the axis and measurement system being completely separated. As a consequence, there are no axially or radially acting forces that could cause increased wear and adversely affect the life of the sensor. Non-contacting rotary encoders are based on a magnetic, contactless measuring principle.
As a result, they are not only non-wearing and rugged enough to stand up to external influences, but also convince users with factors such as long life, precision and resolution. They are available as standard components and also in customer-specific versions, with offset tolerances of a few millimetres – depending on the version. They also boast impressive features, including maximum 14-bit resolution with a linearity of ±0.3%. Non-contacting angle sensors are frequently also attractive in price terms. The simpler construction reduces production costs considerably and subsequently also prices.
Automotive / Motor Sports
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