Label detector is not easily fooled
Label detector is not easily fooled
Labels of differing thicknesses, and clear labels on opaque backing strips, can both be sensed reliably by a new label detector from Rechner Sensors. The KL sensor is a capacitive fork device which can detect whether there is a double layer of labels and is said to be unaffected by fluttering or uneven label materials.
The detector works, in effect, as two sensors, with a pair of measuring electrodes in the top plate of the fork, and a third electrode in the lower plate. This third electrode can be eliminated if the labels are passing over a flat conductive surface. The gap between the plates can be adjusted up to 20mm.
To commission the detector, a sample is placed in the measuring area, and a potentiometer is adjusted using a simple LED display. Counting rates up to 10m/s are possible and the repeatable accuracy is 0.1mm.