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The freezer zones are governed by other laws, such as in environments under normal temperatures. The Bar code scanner VB14N-T from Pepperl + Fuchs ensures optical identification at temperatures up to -35 ° C. It offers a very good reading performance even with low bar code contrast, can be quickly put into operation by a fast warm-up phase and is energy-efficient and compact.

In the food industry, a complete cold chain is essential for the quality of the products. The storage temperature of frozen products is no more than -18 ° C according to German food law. This temperature must not be exceeded during the entire cold chain. This places high demands on the sensors in the cold storage warehouses. Even at very low temperatures, frozen products must be reliably identified so that they arrive at the final destination.

Challenges of the application

pepperl20819The goods are transported in frozen storage on trays. The frozen goods can be identified and transported for further picking with the aid of the barcodes attached to the trays. The scanners must therefore be able to be used quickly and reliably at the lowest temperatures. In addition, the prevailing temperatures can negatively affect the readability of the codes themselves. For minimal error rates and low throughput times even difficult to read codes must always be reliably detected, even at high throughput speeds.

Features of the barcode scanner

The bar code scanner VB14N-T has an integrated heater and therefore withstands ambient temperatures from -35 ° to + 45 ° C. Thanks to the short warm-up phase of a maximum of 20 min, it is quickly ready for use and has a reduced energy consumption of maximum 9,6 W. In addition, the scanner is very reliable when reading hard-to-recognize barcodes thanks to its high-performance optics and code reconstruction. The compact design also allows installation in confined spaces.

Networking included

pepperl30819Up to 32 devices can be networked via a high-speed connection. This allows simultaneous detection of multiple bar codes that may be located at different positions. The scanner has a function key and several LEDs to assist with parameterization, bar code learning and testing.

During operation, the LEDs provide information about the respective reading status. The associated PC software also allows easy parameterization.

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