Leuze KRT18B series contrast sensors with white light

Leuze has developed additional KRT18B series contrast sensors for the purpose of identifying markings on packaging, even if they’re barely distinguishable from the background. Offering 10 models, the sensors supplement the existing RGB light solutions and give users additional options.

The latest contrast sensors use white light, offering maximum reliability for glossy surfaces, no matter what the colour of the marking is. This saves system operators time and effort when changing formats. RGB contrast sensors, in contrast, do a better job at detecting markings on colourful films. Depending on the requirements, the user can flexibly choose between the two models. Leuze says both systems detect equally and offer a quick response time with minimal signal jitter.

The KRT18B series (RGB and white light) offers a dual operating concept: the sensor functions can be configured via IO-Link or via a manual sensitivity control by potentiometer or teach-in button. The model with IO-Link enables the use of remote maintenance, diagnosis and sensor configuration. Three teach levels guarantee a suitable set-up routine for each application.

The KRT18B contrast sensors are easy to control, providing a continuous signal display in a bar graph on the rear of the housing. This enables flexible operating ranges of about 13 mm (±3 mm) and is designed to enable reliable operation even if the operating range between object and sensor fluctuates by about 20%.