Optical sensors function contactlessly. They detect objects independent of their characteristics (e.g., shape, color, surface structure, material). The basic operating principle is based on the transmission and reception of light. There are three different versions: 1. The through-beam sensor consists of two separate devices, a transmitter and a receiver that are aligned with one another. If the light beam between the two devices is interrupted, the switching output integrated in the receiver changes its status. 2. With the retro-reflective sensor, the transmitter and receiver are located in one device. The emitted light beam is reflected back to the receiver by a reflector that is to be mounted opposite the device. As soon as the light beam is interrupted, the switching output integrated in the device changes its status. 3. With the diffuse reflection sensor, the transmitter and receiver are in one device. The emitted light beam is reflected by the object that is to be detected.
Germany
scanCONTROL 30x2 laser scanners are powerful profile sensors in terms of size, accuracy and measuring rate. These laser scanners provide calibrated 2D profile data with up to approx. 8 million points per second. With a maximum profile frequency of 10 kHz, the scanners are designed for precise profile measurements in dynamic processes. The sensor matrix offers a resolution of 1,024 points with a point distance from 24 µm. This means that even small details can be detected reliably.
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Wear is a damage consisting in gradual removal or deformation of material on solid surfaces, caused by mechanical (e.g. erosion) or chemical (e.g. corrosion) influences. In machine elements, wear may give rise to material failure or loss of functionality. For the application in question, our client has to measure wear on the surface of rollers in cement mills. Up from a certain depth, reactions are required, generated by a warning system to be developed In this project, we used several robust QuellTech Q6 scanners to cover fully the roller width. Due to the high rotational speed of the rollers, we preferred our fastest scanners for this application. We furthermore developed a software solution and implemented a warning system, based on the critical depth of the wears on the surface. By means of this system, the customer can determine the correct time for exchange of the rollers.
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Les transducteurs ultrasonic de la série Sonarange SNT Sensortechniksont développés et fabriquésen interne et proposent une large gamme de mesure (de quelques cm à plus de 6 mètres). Leur forte puissance d’émission les différencient des produits concurrents et permet la détection d’objets de petite taille et/ou mobiles. La gamme Sonarange ® capteurs à ultrasons La construction de machines et le contrôle process sont les principaux utilisateurs des détecteurs à ultrasons, comme détecteurs de proximité ou de présence. Ils utilisent le principe de la mesure du temps de parcours du son dans l’air. La vitesse du son dans l’air est d’environ 6ms/Mètre (aller et retour). Comparée aux autres technologies, la technologie ultrasonique est très performante. Elle fonctionne en environnement poussiéreux et le son est réfléchi par la plupart des surfaces. Ainsi, elle ne dépend pas de la structure, de la couleur, de la surface du matériau à détecter. La poussière, la lumière, l’humidité n’ont...
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The ParaDish2 works with the SDT270 and the SDT200. It makes long-distance ultrasonic detection possible, allowing you to hear ultrasound waves from more than 300 feet/91 meters away. It’s equipped with an optical viewfinder and integrated laser pointer.
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