Non-contacting Systems (Electric Motors)

10.1.8
These systems generally offer higher reliability, and are typified by the following
• Optical, capacitive, and magnetic encoders
• Brushless resolvers
• Most modular or kit encoders
• Open-frame linear scales.
Note that the use of incorporation of bearings into a feedback device does not exclude it from being described as a noncontacting sensor. Make sure you are fully aware of the manufacturing principles when specifying a noncontacting sensor.Truly noncontacting sensors, like modular rotary encoders or brushless resolvers, can still become partially contacting devices if seals are incorporated in the final installation to the application.