For clear label sensing, Lion Precision has designed and built a machine to compare optical sensors, ultrasonic sensors and two types of capacitive sensors. The company uses all of these technologies in products it offers. With this evaluation tool, sensors that employed each of the four technologies were tested and compared using web speeds of 70 meters/minute and 220 meters/minute. The results:

• The capacitive technology registered no errors, even at 220 meters-per-minute.
• Optical sensors showed a small decrease in accuracy at the higher speed.
• Ultrasonic sensors, while having the advantage of working with a very wide range of label materials, showed considerably larger errors and a clear relationship between web speed and registration accuracy.

For more information about Lion Precision label sensors, including its newest LRD8200 that uses ultrasonic technology, click here.