Label Counting Scanner: Clear or Low-Contrast Label Detection System (Model LRD2100)

Label Counting Scanner (Model LRD2100)Model LRD2100

The LRD2100 Label Edge Detection System has been specifically designed to detect clear or low-contrast pressure-sensitive labels.

Photoelectric thru-beam scanners are supplied as standard equipment on label counting models of Web Techniques rewind machines. Thru-beam scanners work extremely well for most label types. Opaque or semi-transparent pressure-sensitive die-cut labels with a space between them appear as dark images to thru-beam scanners. However, they are unable to detect clear or low-contrast labels.

The LRD2100 uses a non-contact electronic probe (capacitance type) to detect the presence of labels. By integrating this innovative scanner system with the Web Techniques Label Counting Rewind Machine, exact label counting of difficult-to-detect labels can now be done! The LRD2100 is also very effective with standard die-cut types of labels.

The LRD2100 will not detect cross-scored labels or other labels that don’t have a space between them. The sensor is not recommended for use with “conductive” inks, i.e., metallic, carbon-filled, etc.


This system includes an automatic set-up feature that self adjusts as different label material is presented to the probe. An adjustment override is included to allow manual set-up when needed.


Interchanging the LRD2100 scanner and the standard thru-beam scanner can be performed quickly since the LRD2100 comes with its own mounting bracket.


LRD2100 Capacitance ScannerStandard Thru-Beam Scanner
As clear labels on a clear liner (or other low-contrast material) pass through the LRD2100, the scanner will automatically measure the two levels of capacitance (liner only vs. label and liner). The scanner will trigger the counter when a change in capacitance is detected.When opaque or semi-transparent die-cut labels pass through the thru-beam scanner, the counter is triggered whenever the photo-electric eye detects a light/dark contrast.