Sensors and measurement devices are commonly used in industrial applications. In particular, non-contact displacement sensors are used to measure the travel range between where an object is and a reference position, and are popular for automation, OEM, research and development, test and inspection, quality assurance, maintenance and service, or process control. They increasingly contribute to the solution of the demanding measurement tasks and are used for wear-free applications where contact measurement is unacceptable. The underlying principles and technology comparison are outlined here to assist in choosing the correct displacement sensor for your applications.
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