Limit Switches Vs Proximity Sensor

Max switch rate typ.

Limit switches vs proximity sensor.

Limit switches are contact switches. 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. Max switch rate typ. Proximity switches industrial automation by d w.

Proximity sensors operate without any physical contact from the object itself. 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. Proximity sensors and switches 35 5 proximity switches sensor targets sense distance typ. The class of proximity switches operates by the disturbance of an electromagnetic field by capacitance or by sensing a magnetic field.

The difference between limit switch and proximity sensor. Proximity sensors are non contact switches with a long life and are suitable for passing objects. Due to the internal contacts the working life is relatively shorter. Limit switches are used for position detection in one direction.

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. The actuator is the part of the switch which physically comes in contact with the target. This makes them ideal for use in dirty or wet environments. They re often used in manufacturing and robotics to keep processes running smoothly or in security to keep areas safe.

Choose from our selection of dc metallic object proximity switches sensor and switch mounting brackets ac metallic object proximity switches and more. 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. Turck usa is a specialist in sensor fieldbus and connectivity products as well as interface technology human machine interfaces hmi and rfid systems. Sensor targets sense distance typ.

In some limit switches the actuator is attached to an operating head which translates a rotary. Turck offers efficient solutions for factory and process automation applications. Most limit switches contain the following functional parts in one form or another.