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  • Operating Principles for Inductive Proximity Sensors
    Inductive proximity sensors are used for non-contact detection of metallic objects. Their operating principle is based on a coil and oscillator that creates an electromagnetic field in the close surroundings of the sensing surface. The presence of a metallic object (actuator) in the operating area
  • Proximity Sensors
    be suitable for a plastic target; an inductive sensor requires a metal target. In capacitive proximity sensors, the sensed object changes the dielectric constant between two plates. Sensing range is usually quoted relative to water. Because changes in capacitance take a relatively long time
  • Sensor Sense: Inductive sensors and resistance welding
    Inductive sensors and resistance welding Resistance welding is known to create electromagnetic interference at levels high enough to falsely trigger inductive proximity sensors. Inductive proximity detectors used near welding applications require special coil and core combinations to prevent false
  • Analog Sensing: Where and How It's Used (.pdf)
    When sensing metal objects, sometimes the standard inductive proximity sensor simply doesn't cut it. For instance when sensing a rotary cam - the oblong shape necessitates a sensor that can detect the different shapes/sizes and where the object is within the sensing range.
  • Sensor Sense: Advances in inductive sensing - Factor 1 sensors
    Inductive proximity sensors detect metal objects without touching them. Factor 1 inductive sensors have at least two coils in their design. One technique connects the first coil to an oscillator circuit while the other coil is part of an impedance circuit that controls the amplitude
  • Smarter gripping
    The addition of analog sensors to pneumatic grippers gives new intelligence about the health and well being of automated processes. A wedge-shaped target is visible in this view of a pneumatic gripper holding sheeted material. When used with an analog inductive proximity sensor, the wedge serves
  • Sensor Sense: Sensors and slag
    for inductive proximity sensors. Sensor manufacturers address weld slag and splatter problems in numerous ways. One way is by making the sensor front cap particularly resistant to slag and splatter. The reason is most often the sensor face is directly exposed to the weld flash. Thus slag
  • Capacitive sensors
    and oscillation amplitudes return to normal levels. Those target materials have little effect on electromagnetic fields, so inductive proximity sensors are useless in these situations. The sensing field must change from the electromagnetic domain to the electrostatic domain; the inductive proximity sensor

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