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Proximity sensor (square)

Proximity sensor is a general term for sensors that replace the contact detection methods such as limit switches and aim to detect without touching the detection object. The movement information and presence information of objects can be detected and converted into electrical signals. Among the detection methods that are replaced by electrical signals, there are methods that utilize eddy currents generated in a metal object to be detected by electromagnetic induction, methods that capture changes in the capacity of electrical signals due to the proximity of the object to be detected, and methods that use sharp stones and guide switches. .

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Product Details

I. Overview

Proximity sensor is a general term for sensors that replace the contact detection methods such as limit switches and aim to detect without touching the detection object. The movement information and presence information of objects can be detected and converted into electrical signals. Among the detection methods that are replaced by electrical signals, there are methods that utilize eddy currents generated in a metal object to be detected by electromagnetic induction, methods that capture changes in the capacity of electrical signals due to the proximity of the object to be detected, and methods that use sharp stones and guide switches. .

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2. Features

Proximity switches are exquisite in structure, small in size, and can be installed in extremely limited spaces, making them suitable for miniaturized equipment.
The components of the proximity switch are hermetically sealed in an inert gas atmosphere, never in contact with the external environment, and have a long working life. The proximity switch has no sliding components, so there will be no metal fatigue phenomenon related to all metal degradation. Ensures a virtually unlimited mechanical service life.
Uses: Proximity switch is also called non-contact travel switch. Its working principle is that when the switch touches a reverse object, it sends out a control signal to complete travel control or limit protection.


3. Advantages

1. Since the detection can be performed in a non-contact manner, the detection object will not be worn or damaged.
2. Due to the non-contact output method, the life extension (except the magnetic type) adopts semiconductor output, which has no effect on the life of the contact point.
3. Compared with contact switches, it can achieve high-speed response
4. Can correspond to a wide temperature range


4, the scope of application

Security, coffee machines, water purifiers, measuring instruments, office automation equipment

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5. Product Specifications

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Precautions:
1. The supply voltage must not exceed the range of the reed switch, otherwise the core components will be damaged.
2. When the proximity switch is installed, it should not be dropped or knocked, otherwise the reed switch in the proximity switch will be broken and lead to failure.
3. There should be no other magnetic things around the proximity switch, otherwise it will affect the normal connection or disconnection of the switch.
installation method:
1. Usually, the proximity switch is fixed with screws.
2. There is also an upside-down button to pull out the proximity switch shell to fix it.

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