Microsonic LCA-2 Manuel d'utilisateur télécharger pdf (Page 32)

Page 32 of 51 Parameter change in the double sheet control

PARAMETER CHANGE IN THE DOUBLE SHEET CONTROL

The function of the double sheet detection is to detect two or more sheets lying one on top of the other or

to detect other laminary materials. The sensor system consists of a transmitter and a receiver complete

with integrated evaluation electronics.

A high-frequency ultrasonic transmitter beams from the underside against the sheet material. The emitted

ultrasonic pulse excites the sheet material into vibrations. The effect of these vibrations is for a very small

sonic wave on the other side of the sheet to spread. This wave is received by the ultrasonic receiver

located there. In the case of sheet one on top of the other (double sheet), the receiver detects the

difference in signal and sets its outputs accordingly.

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Microsonic LCA-2 Manuel d'utilisateur Page 32