01 May 2003
Market responds to sensing needs
Market players have improved sensing ranges by tweaking the circuitry and components in the prox tube. Companies such as Eaton Corp. are responding to users' needs (see accompanying article) with products that are field programmable and equipped with adaptable inductive proximity sensors, which allows for increased range and field programmability.
This type of sensor ignores side-ground, background, and foreground metal, senses in a band, or senses a position of an object in multiple axes. This occurs because the sensor's microprocessor continually samples its environment to determine the amount of metal in its sensing field. By interpreting the field with the onboard microprocessor, the sensor can lock into memory-specific target locations within the field at set points. It then saves those set points as parameters: operate point, release point, and background metal.