Print Mark Sensors

These sensors have been specially designed to recognize print marks. They have a very small spot, and use a white light LED with long service life. Only one sensor is required for the recognition of all color combinations, as well as the difference in brightness between printed markings and the background.

Applications

• Differentiation of up to 100 gray scales
• Print mark recognition
• Detection of prints, stamps and labels of all kinds
• High-speed print mark recognition
• Recognition of smallest stamps by a very small spot

Features WP02/WP04

WP02 and WP04 series sensors are distinguished by high geometric and contrast resolution. These sensors can be adjusted for use with any application thanks to an extremely small spot, high switching frequency and a white light diode with longer service life. Various Teach-In modes are available in this case as well. Additionally, the switching threshold can be readjusted with the help of a key potentiometer. All sensor settings can also be selected via the integrated RS-232 interface, and values generated by the sensor can be read out via the same interface.

Features WM03

WM03 series sensors are capable of differentiating extremely fine grey tone variations within a scale of black to white. They are equipped with various Teach-In modes (e. g. dynamic Teach-In, two point Teach-In and window Teach-In), which allow for optimized sensor adjustment for any application. Beyond this, the sensors are equipped with a delay function for time delayed deactivation of the output.

Interface

Sensor functions can be activated and scanning results can be acquired via the RS-232 interface. 　

Adjustments

Adjustments are made with the Teach-In keys, externally or via the RS-232 interface.