Greater sensing distance is a key feature of the Rockwell Automation/Allen-Bradley Bulletin 872C WorldProx inductive proximity sensor. Range is up to 50% farther than previous designs for 12-mm shielded and 8-mm unshielded versions and upwards of 30% more for 8-mm shielded models. Designers can thus obtain higher performance with standard-size cylindrical sensors, obviating the need for custom sensors for unique uses.
As the name implies, the WorldProx device is UL and c-UL listed and CE marked. Sensor electronics are fully potted in IP67 and NEMA 6P enclosures for vigorous environment applications. Other features guard against transient noise, short circuits, overloads, false pulses, and reverse polarity. Such reliability provisions reduce long-term costs.
Finally, the proximity sensor comes with a 360-degree visible output indicator--either an LED-lit translucent end cap on pre-wired models or a four-porthole design on quick-disconnect sensors. All-direction visibility at greater ranges facilitates installation and trouble shooting, and lowers maintenance expense.
According to Jim Jerschefske, company industrial control group representative, the latest manufacturing techniques allow large-volume production of such high-end performance devices, giving reduced costs for customers.
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