Limit Switches Vs Proximity Sensor

In some limit switches the actuator is attached to an operating head which translates a rotary.

Limit switches vs proximity sensor.

The actuator is the part of the switch which physically comes in contact with the target. Due to the internal contacts the working life is relatively shorter. Max limit switch any 0 physical contact req d 3 hz mercury switch any 0 physical contact req d 3 hz reed switch magnet 20 mm 500 hz photo electric opaque 0 1 to 50 m depends on target shape 100 1000 hz. Proximity sensors are non contact switches with a long life and are suitable for passing objects.

Max limit switch any 0 physical contact req d 3 hz mercury switch any 0 physical contact req d 3 hz reed switch magnet 20 mm 500 hz photo electric opaque 0 1 to 50 m depends on target shape 100 1000 hz ultrasonic nonporous large. Sensor targets sense distance typ. The difference between limit switch and proximity sensor. Rarely a final operating device will be directly controlled by the contacts of an industrial limit switch but more typically the limit switch will be wired through a control relay a motor contactor control circuit or as an input to a programmable logic.

Max switch rate typ. Max switch rate typ. Proximity sensors and switches 35 5 proximity switches sensor targets sense distance typ. As i know limit switch is generally the switch which we can operate by physical touch or contact proximity switch is like it uses the proximity sensor which can operate from the limited distance when it sense the object in its pridefine range.

Turck usa is a specialist in sensor fieldbus and connectivity products as well as interface technology human machine interfaces hmi and rfid systems. Turck offers efficient solutions for factory and process automation applications. The class of proximity switches operates by the disturbance of an electromagnetic field by capacitance or by sensing a magnetic field. They re often used in manufacturing and robotics to keep processes running smoothly or in security to keep areas safe.

This makes them ideal for use in dirty or wet environments. Choose from our selection of dc metallic object proximity switches sensor and switch mounting brackets ac metallic object proximity switches and more. Cylindrical proximity sensors and switches use infrared acoustic capacitative or inductive means to detect objects and will open or close the electrical circuit if the object is within a certain distance. Prox switches are less sensitive to dust moisture moisture and oil than limit switches and their internal solid state circuitry makes them better suited for applications with high levels of vibration than the mechanical limit switches.

Proximity switches industrial automation by d w. Proximity sensors operate without any physical contact from the object itself. Limit switches are contact switches.