By combining long-range sensing with automatic dynamic calibration and a damage-resistant mounting option, new OL photoelectric sensors from efector (Exton, PA) are said to solve many of the problems typical in conveyor applications.
The Model BCL 21/22 bar-code reader from Leuze-Lumiflex (Rockaway, NJ) is about the size of a pack of cigarettes and weighs a mere 180 g. Sensor reliably scans minimal bar widths of 0.15 mm with optimum depth of focus.
Omron's (Schaumburg, IL) new E3S-CD photoelectric sensor detects presence/absence and basic position of a label on a glass or plastic container, regardless of the color or luster of the label or container.
Thanks to an integral AS-i interface, efector's (Exton, PA)T-series IND sensor essentially is two inductive proximity switches in one unit, functioning as a replacement for a standard switchbox by accepting up to 31 valves in one AS-i system.
The KT10 from SICK Optic-Electronic (Bloomington, MN) is a 10-color contrast sensor that is said to read any contrast in color 25ꯠ times/sec. The operator pushes a button to "teach" the sensor, which then "looks" at the contrast it is required to sense and selects the proper light source for best results.
A white paper from Electro Cam (Roscoe, IL) titled "Internal High-Speed Logic" explains in plain language what a programmable limit switch is and how it performs machine logic by using inputs from sensors and switches to trigger outputs such as solenoids.