Microsonic LCA-2 Manuel d'utilisateur télécharger pdf (Page 37)

Parameter change in the Label-/Splice Sensors esp-4 and esf-1 Page 37 of 51

PARAMETER CHANGE IN THE LABEL-/SPLICE SENSORS ESP-4

AND ESF-1

Labels are guided through the fork. An ultrasonic transmitter in the lower tine of the fork beams a fast

sequence of pulses through the backing material. The sound pulses cause the backing material to

vibration, so that a greatly attenuated sound save is beamed from the opposite side. The receiver in the

upper tine of the fork receives this sound wave.

The backing material transmits a different signal level from the label. This signal difference is evaluated by

the esf-1. The signal difference between the backing material and the label can be very slight. To ensure

a reliable distinction, the esf-1 must be trained to the label.

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Microsonic LCA-2 Manuel d'utilisateur Page 37