NK Technologies (San Jose, CA) offers the ATS Series AC current sensors that combine a current-operated switch and transducer in a single package. A built-in digital display provides a visual indication of where the contact changes. The sensors provide a solid-state contact that changes state when the current exceeds an adjustable level or falls below the normal running current. The trip point is adjustable from 2% to 100% of the analog range, and can be verified by viewing the LCD display on the sensor.

ATS current-operated sensors provide electronic proof-of-operation, while eliminating the need for multiple pipe or duct penetrations. The sensors are suited for applications including conveyor jam and overload protection, multiple conveyor section interlocking, pump control monitoring and shutdown in the even of current rise beyond setpoint, cooling tower monitoring for time-of-use and clogged filter detection, starter coil monitoring, and machine shutdown if an overload occurs.

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Motion Control & Automation Technology Magazine

This article first appeared in the August, 2014 issue of Motion Control & Automation Technology Magazine.

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