Label sensor esf-1: detected with certainty. It's all not a question of the label

Ultrasonic label sensors from microsonic detect labels, regardless of whether metallised or not, made of foil or paper. Changing colours, degrees of transparency or different material thicknesses do not present any challenge at all to the ultrasonic sensor esf-1. With the improved evaluation algorithm, it can even detect difficult labels at high label speeds.

The new esf-1 label sensor from microsonic is equipped with a PNP switching output and a push-pull switching output with IO-Link version 1.1. The compact fork housing can be fitted close to the dispenser edge. The sensor reliably detects the label edge at high web speeds and with the improved evaluation algorithm, it can even detect difficult labels. To the ultrasonic sensor, it does not matter whether the labels are metallized, or made of foil or paper. Even changing colours and degrees of transparency have no effect on the certain detection in the labelling process. In addition, the sensor can also be used to detect adhesive joints and splices.

Along with the launching of version 1.1 of IO-Link, the esf-1 label sensor also got an improved evaluation algorithm. In the teach-in phase of the labels, the algorithm more precisely analyses the transitions between the base material and the label. Some labels can cause so-called overshoots in the area of these transitions. The overshoots depend on the material and thickness of the labels. The overshoots are thus better detected and suppressed for the automatic determination of the switching threshold. Labels that were difficult to detect with ultrasound in the past can now be learnt easily with the esf-1 and positioned with certainty.

IO-Link is not fast enough for the exact positioning of the labels. This continues to be done in SIO mode. Through the IO-Link interface, the label sensor settings can be made directly at the controller without having to operate the sensor on-site. The sensor has the smart auxiliary function recipe management integrated in it via IO-Link. To that end, the different labels are first learnt and the material parameters are saved in the controller. If the label is changed, the operator selects the label type at the controller. The controller rewrites the label-specific parameters to the sensor. This shortens the expensive setup time.

About microsonic: microsonic has a reputation as a specialist in ultrasonic sensors in industrial automation technology. The product spectrum includes a comprehensive range of ultrasonic distance sensors, special sensors like ultrasonic double-sheet control, web edge sensors or ultrasonic proximity switches with switching frequencies of up to 250 Hz.