How can colored pencils be reliably detected?

In modern production and packaging systems, even small objects and objects of different colors must be detected precisely. For stationery such as fineliners or colored pencils in particular, the reliable detection of each individual product is crucial in order to reliably control downstream processes such as packaging, counting or quality inspection. The challenge: the pens vary in color, surface finish and reflective behavior. At the same time, they move quickly past the sensor position – at up to 80 pins per minute. This calls for a sensor that works independently of color, can handle high switching frequencies and can be easily integrated into existing systems.

Colorful crayons in different colors arranged in a display.
The P1KL002 retro-reflex sensor detects different colored pins safely and reliably.

Precise object detection with the P1KL002 retro-reflex sensor

The P1KL002 retro-reflex sensor from wenglor offers exactly these features. It works with visible red light and an integrated polarization filter, enabling it to reliably detect objects even with highly reflective or colour-changing surfaces.

The sensor reliably detects the colored pencils in a working range between 100 and 200 millimeters, but also remains process-stable at smaller distances.

Thanks to its high switching frequency of 1,000 Hz, the P1KL002 also processes fast movements effortlessly and ensures smooth pulse transmission to the control system – a decisive advantage for continuously running conveyor systems or high-speed packaging lines.

Compact format and easy integration

Metal mounting bracket for photoelectronic sensors.
The Z1KX001 mounting bracket enables precise and stable mounting of the P1KL002 retro-reflex sensor.

Thanks to its robust plastic housing and compact size, the P1KL002 can be flexibly mounted in machine environments. In combination with the Z1KX001 mounting bracket, it can be precisely aligned to the range.

As the emitter and receiver are combined in one device and work together with a reflector, the installation effort is significantly reduced compared to a throughbeam light barrier.
Another advantage: The P1KL002 is insensitive to ambient light and remains reliable even in changing light conditions or shiny environments.

Stable detection regardless of color and material

Whether black, red or shiny metallic fineliners – the sensor delivers consistently stable switching signals. The red light ensures clear alignment and facilitates adjustment, making initial start-up and maintenance particularly easy.

Conclusion

The P1KL002 is the ideal choice for the precise detection of colored pens and small objects in industrial applications. It combines high speed, reliable color detection and a compact design in a system that is easy to integrate.
This makes it a reliable and economical solution for packaging and automation processes where every detail counts. As a result, thread detection remains flexible, reliable and tailored to the application in question.

Author

Picture of Max Mustermann

Max Mustermann

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