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Ultrasonic Sensors
The scanning of the web edge is carried out contactless by ultrasonic waves.
Areas of application:
- Materials with dust or fluff-like deposits
- Films with a variable level of transparency
- Light-sensitive materials
Properties of BST infrared sensors:
- Pulsed infrared light (insensitive to external light sources)
- No influence on the measurements by flutter of the web within the light path
- Automatic contamination message
- Optional connection for air-driven cleaning protects the lens against contamination from paper, dust or other contaminants
Properties of BST ultrasonic sensors:
- 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
- Large proportional scanning band permits web center-line guiding even for relatively large web width variations
- Compensation for any interference which may be caused by external sound sources or other environmental influences
Infrared Sensors
Non-contact scanning of the web edge is carried out by infrared light.
Areas of application:
- Transparent and non-transparent materials
- Thick materials
