Edge sensor PosCon

Precise detection of thin and transparent objects

The PosCon has a diverging measuring field. This makes large measuring areas of up to 800 mm possible. The specified measuring area is achieved at the nominal distance. It becomes larger or smaller proportionally with the distance. This causes an object to appear larger or smaller according to the distance.

  • Portfolio
    • PosCon

      • Edge, center and width measurement
      • Precise detection of fast moving objects
      • Measuring field size up to 875 mm
      • RS485 interface
    Applications
    • Edge detection
      • Control of textile, plastic or paper edges
      • Positioning of objects by the edge
      • Level measurement

      Width measurement
      • Width inspection during the production of fabric and rubber bands

      Center position
      • Position measurement by the object center, by which bands or objects of different width can be aligned centrally to each other
    Advantages

    PosCon edge sensors are used to detect object widths and object positions. The position / width is issued as an analog value with high accuracy proportional to the overall measuring area. Although smaller than a deck of playing cards, the sensors contain not only the complete signal conditioning, but also a long-life illumination unit.

      • Efficient: one sensor is able to measure objects on the complete width of a belt conveyor
      • Measurement is possible on transparent objects and films
      • The measuring area can be restricted by a simple Teach-in process to suppress interfering objects and areas
      • Easy handling: The three different measuring modes (width, edge, center) can be set simply by a push of a button
      • Two threshold values can be programmed with the Teach-in button and serve as tolerance limits for the switching output
      • Flexibility: all functions available with the buttons can also be operated via an RS 485 interface
      • The position and other information can be read via the interface 
      • Robust housing
    Operation

    With the line sensors, the light of the integrated illumination is reflected by a reflective film (special film) installed opposite the sensor and is received by the diode line. The length of the diode line and the optics determine the measuring area. Due to the narrow diode line, the measuring area is also only a narrow band. If an object obstructs a part of the light, no light falls on the corresponding part of the diode line. The integrated microcontroller processes the shaded areas and the transitions from dark to light and calculates the corresponding analog value according to the measuring mode.

    The PosCon has a diverging measuring field. This makes large measuring areas of up to 800 mm possible. The specified measuring area is achieved at the nominal distance. It becomes larger or smaller proportionally with the distance. This causes an object to appear larger or smaller according to the distance.

    Mounting

    The reflective tape specified in the documentation must be used for the PosCon. If the reflective tape is protected against abrasion by a Plexiglas or glass sheet, this must be tilted 7° to the sensor to ensure that the direct reflection does not reflect to the receiver.