MechChem Africa January 2017

⎪ Automation, process control and instrumentation ⎪

A new contrast sensor that combines product usability with high performance has been added to the Leuze sensing solution product line-up. Ideally suited to packaging processes, the innovative sensor will provide reliable detection in foil bag packaging machines as well as for label detection in filling systems. In addition, the need to precisely detect small parts and accurately position these has increased in demand of late as many products become ever smaller in size. New Leuze contrast sensor available

A vailable from Countapulse Con- trols, the new Leuze KRT 18B contrast sensor is a flexible multi- colour device that uses the three LED colours of red, green and blue to automatically determine the colour that produces the maximum contrast with the detected mark. A significant feature is that reliable detection is possible even on glossy sur- faces or when marks are faded. This is due to the automatic sensitivity readjustment. Equipped with a high switching frequency of up to 22 kHz, shortened response times are possible when using the Leuze KRT 18B. An alignment aidon the13mmfocal pointmeans the sensor can be easily aligned and rapidly put into operation. Different models of the sensor are avail- able for simple switching point adjustment and each incorporates a self-adjusting bar graph for optimal display of the signal quality. One variant of the Leuze KRT 18B has two teach buttons for calibration on background andmark, while another has a potentiometer and a colour selection button. These features make reliable functional- ity possible with just a single setting, even where there is a high contrast on the mark. Changes to the foil format on packaging machines, for example, can be quickly and easily adapted using the integral IO-Link interface of the sensor. The device is housed in an ECOLAB tested housing that is rated to IP 67 and IP 69. Countapulse Controls, the official Leuze distributor for southern Africa, is able to assess any sensing application and provide a fit-for-purpose solution that will meet the specific needs of an operation. The company also offers a 24/7 hotline to assist end users with technical challenges that may be experi- enceddue to lackof knowledgeor experience. Precise detection with laser sensors Countapulse Controls also offers a range of laser sensors that are capable of reliably identifying small objects, accurately measur- ing dimensions and positioning these where required. Use of Leuze laser sensors that incorporate highly directional light beams facilitatesoptimumreliability for theenduser. Alignment is simplified using a small light

spot and these sensors are engineered to ensure an exact switching point. In addition, Leuze laser sensors can facilitate the detec- tion of narrow openings, adding to the flex- ibility of these devices. Leuze offers a wide range of Class 1 laser sensors and the advantage of these devices is that the laser radiation emitted does not pose a hazard to the human eye. These sen- sors can be used in exactly the same way as

Available from Countapulse Controls, the new Leuze KRT 18B contrast sensor is a flexible, multi-colour

device that uses the three LED colours of red, green and blue to automatically determine the colour that produces the maxi- mum contrast with the detected mark.

classic LED-based sensors, with no need to take additional mea- sures to protect workers in the area fromexposure to the laser as would have been necessary withconventionallasersensors. Countapulse Controls is the official distributor of Leuze sensing solutions and offers a comprehensive range of laser sensors and devices that will meet even the most demand- ing operational requirements. Thewide selection of switching as well as measuring opto- electronic sensors all comply with the operating principles of Class 1 lasers. q

Countapulse Controls offers a range of laser sensors that is capable of reliably identifying small objects, accu- rately measuring dimensions and positioning these where required.

Leuze offers a wide range of Class 1 laser sensors and the advantage of these devices is that the laser radiation emitted by these sensors does not pose a hazard to the human eye.

January 2017 • MechChem Africa ¦ 29