![]() The difference between limit switch and proximity sensor: Different proximity sensors have different detection distances and response frequencies. The ability to respond to continuous detection objects is called the "response frequency". This perception distance is usually called the "detection distance". Proximity sensor is a devise that "perceives" the object approaching it. It is used to detect the size of parts, speed, or used in frequency conversion counter, frequency conversion pulse generator, liquid level control and automatic connection of processing programs. It can not only complete the stroke control and limit protection, but also realize non-contact detection. Proximity sensor can be also called non-contact limit switch. According to the change of the contacts open/close state, the system can control the action of the circuit and machine. When the object is close to the stationary object, the lever of the limit switch drives the switch contacts open or close. It can be installed on relatively stationary objects (such as fixed mount or door frames) or moving objects (such as travelling crane, door, etc.). Limit switch is used to limit the position or stroke of the mechanical movement, so that the machine automatically stops, reverses, changes speed or automatically moves back and forth according to a certain position or stroke. ![]()
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