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Ultrasonic Label Sensor - LRD8200

Single-Ended Capacitive Label Sensor


Works on virtually all materials


Accuracy, Layered webs, Speed


Performance: 2/5
Materials: 5/5
Ease of Use: 5/5
Cost: 3/5
Reliability: 5/5


Label Sensor User Manuals

Adjusting Label Sensors

Complete Technical Details on the LRD8200 Clear Label Sensor


Ultrasonic label sensor field

Ultrasonic sensors use high-frequency sound waves to sense the thickness of the web.

Ultrasonic sensors measure web thickness with high-frequency sound waves that are transmitted by a transducer under the web to a receiver above the web. More sound energy passes through the web at the gap than during the label. These sensors have no sensitivity to metallic materials and are able to sense labels of almost any material. They can struggle with unique labels that contain multiple layers, especially if there are air bubbles in the material.

Ultrasonic sensors have a great advantage in that they can detect the broadest range of materials. But they are considerably less accurate than capacitive sensors, even at low speeds. Because of the nature of the technology, their accuracy is directly related to web speed – accuracy continually decreases as speed increases.

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