AS9120B, ISO 9001:2015, AND FAA AC 0056B ACCREDITED

Limit switches are electromechanical devices that detect when an object moves further than its predetermined limit, quickly interfering to prevent it from causing unwanted damage. Most often, they are used alongside industrial machinery as a way to keep individual moving parts working at their best. As a form of proximity sensor, they follow a set of principles which are designed to observe once an object has passed a defined limit to its movement. However, unlike similar sensor devices, limit switches detect movement by making physical contact with the target object. This simple mechanical design offers certain advantages as well as a few major limitations. While there are a plethora of variations, this article will focus on limit switch designs that are used in the control and actuation of industrial valves.


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