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Transparent Label Detection from Sick

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article image UF Ultrasonic Fork Sensor
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The new UF ultrasonic fork sensor from Sick , detects labels and substrates with any colour, transparency and surface properties. It's functional principle and the compact IP65 metal housing (unique on the market) also mean that the UF can be used wherever conditions are harsh and space is limited or, for example, contamination can be expected.

Transparent labels on transparent substrates or labels with differing printing, the Ultrasonic Fork (UF), is the first choice. It is the ideal solution when adhesive tape on an envelope, holes in a foil or edges of transparent labels must be detected. It is also suitable to differentiate between single and multi-layered materials. The ultrasonic process of the UF does not rely on optical properties, but on attenuation of the sensor’s acoustic signal – which depends on the thickness of the material.

A 2mm separation between labels is sufficient to allow the UF to detect them individually on a substrate band. Detection capability and speed ensure accurate attachment of the labels in the machine. The user can individually define the output switching signal because the UF offers both NPN and PNP switching as standard.

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