Introduction to Proximity Switch for Shandong Zhuoxin EH8-G18-L1 Cement Plant: Proximity switch is a position switch that can be operated by mechanical direct contact with moving parts. When an object approaches the sensing surface of the switch to the action distance, no mechanical contact or pressure is required to activate the switch, thereby driving DC electrical appliances or providing control instructions to computer (PLC) devices. Proximity switch is a type of switch type sensor (i.e. contactless switch) that combines the characteristics of travel switch and micro switch, as well as sensing performance. It has reliable operation, stable performance, frequency response, long application life, strong capability, and features such as waterproofing, shock resistance, and corrosion resistance. The products include inductive, capacitive, Hall, AC, and DC types. The basic classification is that displacement sensors can be made according to different principles and methods, and different displacement sensors have different effects on objects; lquo; Perception; rquo; The methods are also different, so there are several common proximity switches: passive proximity switches, which do not require power and control the closed state of the switch through magnetic induction. When a magnetic or iron trigger approaches the switch magnetic field, it is controlled to close by the internal magnetic force of the switch. Features: No power required, non-contact, maintenance free, environmentally friendly. Eddy current proximity switches are sometimes also called inductive proximity switches. It utilizes a conductive object to generate eddy currents inside the object when approaching a proximity switch that can generate an electromagnetic field. This eddy current reacts on the proximity switch, causing changes in the internal circuit parameters of the switch, thereby identifying whether a conductive object is moving closer and controlling the on or off of the switch. The object that this proximity switch can detect is a conductive body. The measurement of a capacitive proximity switch is usually based on one electrode that forms the capacitor, while the other electrode is the outer shell of the switch. This casing is usually grounded or connected to the equipment casing during the measurement process. When an object moves towards a proximity switch, regardless of whether it is a conductor or not, its proximity always causes a change in the dielectric constant of the capacitor, resulting in a change in capacitance and a change in the state of the circuit connected to the measuring head. This can control the connection or disconnection of the switch. The objects detected by this proximity switch are not limited to conductors, liquids or powders that can be insulated. Hall proximity switch Hall element is a magnetic sensitive element. A switch made using Hall elements is called a Hall switch. When a magnetic object moves close to a Hall switch, the Hall element on the detection surface of the switch produces a Hall effect, causing a change in the internal circuit state of the switch, thereby identifying the presence of a nearby magnetic object and controlling the on or off of the switch. The detection object of this proximity switch is a magnetic object. A photoelectric proximity switch is a switch made using the photoelectric effect and is called a photoelectric switch. Install the light-emitting device and photoelectric device in the same detection head in a certain direction. When a reflective surface (the object being detected) approaches, the photoelectric device receives the reflected light and outputs the signal, thus allowing for; lquo; Perception; rquo; There is an object approaching. Inductive proximity switch 1. Principle: It consists of an inductor coil, capacitor, and transistor to form an oscillator, which generates an alternating magnetic field. When a metal object approaches this magnetic field, eddy currents are generated inside the metal object, causing the oscillation to stop. This change is amplified by the back pole and converted into a transistor switch signal output. 2. Features: A. Good performance, switching frequency, greater than 200Hz B、 Can only sense metals. It is applied to various mechanical equipment for position detection, counting signal pickup, etc. Shandong Zhuoxin EH8-G18-L1 Cement Factory uses proximity switches. When purchasing Shandong Zhuoxin products, please recognize the HANGRONG/Zhuoxin trademark. The products are available, please pay attention to purchasing Zhuoxin Zheng products, which are convenient to use,. If you have any technical questions, please call us to inquire. Your valuable feedback is the progress of our quality and the innovation of our products! Shandong Zhuoxinli creates the quality and brand of YI Flow, providing customers with better products and services! Please rest assured to purchase! 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