The significance of photoelectronic sensors to reliable automation systems is the focus of a white paper from EMX Industries Inc., a Cleveland, Ohio, maker of sensors for industrial automation. It includes an overview of optical sensor basics, advice on sensor commissioning and selection, and the best uses and characteristics of the major optical sensors designed for automation, including contrast sensors, color sensors, color mark sensors and luminescence sensors. Sensor selection variables include whether an object to be measured is glossy or matte, its size, the speed at which it is moving when measured, distance and mounting conditions. To download the white paper, visit: emxinc.com/request-whitepaper.html