Sensors

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The right scanning system for each type of material.

The current position of the web is the basis. It is captured by one or more sensors as actual position.

Ultrasonic Sensors (US) : The scanning of the web edge is realized contact-lessly by ultrasound.




Optical Sensors (IR) : Non-contact scanning of the web edge is carried out by light.




Contrast Sensors (CLS Pro / CCD Pro) : The non-contact scanning of the web material is carried out by detecting optical contrasts.




 
Insensitive to dirt and changes in the transparency of the material
No changes to the measured values through flutter of the web in the sensor scanning area
Compensation for any interference which may be caused by external sound sources or other environmental influences



Field of Application:
 
 
  • Materials with dust or fluff-like deposits
  • Films with a variable level of transparency
  • Light-sensitive materials
Visible light (insensitive to external light sources by an internal compensation of the ambient light)
No influence on the measurements by flutter of the web within the light path
Optional connection for air jet protects the lens against contamination from paper, dust or other contaminants
Large proportional scanning band permits web center-line guiding even for relatively large web width variations



Field of Application
 
  • Transparent and non-transparent materials
  • Thick materials


Precise scanning of lines, print edges or web edges using a color sensor
Optimum lighting thanks to automatically controlled LEDs
Outstanding dependability even at the highest web speeds
Clear color display
Minimal set-up time realized by intuitive user guidance and convenient operation
Laser guided positioning
Realistic picture of printed line, print edge or web edge shown in a color display
Removable control unit allows comfortable handling, even when it is installed in places, which are hard to get to
Remote control of basic controller functions

Field of Application
 
  • Digital scanning of web edges, printed edges or printed lines
  • Web center-line guiding, web width measurement
  • Control of tools or other machines (tracing of cutting knives, etc.)
Resolution of up to 30,000 pixels by a microprocessor controlled CCD chip
Adaption of the viewing range to the specific application by selecting from a range of different lenses
Camera parameters adjustable for change of material while machine is running (no change-over time required)
Quick set-up and camera alignment via an integrated graphic display
Simple operation using various automatic functions (for example, the removal of interfering contrasts, compensation for contamination, white balance and storage of the set-up values)
The production and adjustment parameters can be transmitted more quickly and more securely by networking via the BST eltromat bus system



Field of Application
 
  • Digital scanning of web edges, printed edges or printed lines
  • Web center-line guiding, web width measurement
  • Control of tools or other machines (tracing of cutting knives, etc.)