The new edge sensors type UPF-A TOR are based on the experience of SNT Sensortechnik AG with ultrasonic
through beam sensors. New software algorhythms and a unique SONARANGE ultrasonic transducer material
allow an accuracy and temperature stability so far only realized with optical systems. But the ultrasonic fork
barrier is much less sensitive to dirt and dust compared to optical sensors. Further more transparent materials
such as foils can be perfectly handled. The so called plane change error has been minimized to almost zero.
Together with the high sampling speed of the sensor this means that fast moving and thus fluttering webs are
The sensor can ideally be adjusted to the actual air conditions by the help of the teach-in function. Furthermore
acoustically transparent materials such as textiles can be measured. With teach-in the signal output can be
defined at fully closed as well as at fully open fork. In addition, the output signal can also be inverted via teach-in.
The new sensors can be teached by push buttons or through the connector. 3 LED
indicate the actual position in 5 steps.
larger fork widths are of particular interest if the
material web is vertically heavily flattering or if
it does not always pass at the same height.