the function of magnetic switch
the magnetic proximity switch is a kind of proximity switch, which is one of many kinds in the sensor family. It is a position sensor based on the electromagnetic working principle and advanced technology. It can transform non-electric or electromagnetic quantities into desired electrical signals through the change of the position relationship between the sensor and the object, so as to achieve the purpose of control or measurement.
magnetic proximity switches are widely used in aviation, aerospace technology and industrial production. In daily life, such as hotels, restaurants, garages, automatic doors, automatic air heaters are applied. In terms of security and anti-theft, such as data files, accounting, finance, museums, treasury and other important places, anti-theft devices composed of various proximity switches are usually installed. In measurement technology, such as length and position measurement; In control technology, such as the measurement and control of displacement, velocity and acceleration, a large number of proximity switches are also used.
the principle of magnetic switch
a magnetic switch is to set one or more magnetic reed switches in a closed metal or plastic pipe, then pass the pipe through one or more hollow floating balls with ring magnets inside, and use a fixed ring to control the floating balls and the magnetic reed switches in relevant positions, so that the floating balls can float up and down within a certain range. The magnet in the floating ball is used to attract the contact of the magnetic reed switch to produce the action of opening and closing.
classification of SMC magnetic switches
SMC magnetic switches can be divided into contact type and contactless type. SMCD-? Series magnetic switch? If there is no mark or A, B, C, E and Z, it is a contact type, and F, G, H, J, K, M, P and Y are non-contact. Contact-type no leakage current exists. Contactless magnetic switch has a semi-permanent life because it has no moving parts, but there is leakage current. SMC magnetic switch can also be divided into two-wire system, three-wire system (NPN and PNP) and four-wire system (less used). In addition, the wire length standard of magnetic switch is .5 meters. But you can also choose 3 meters or 5 meters.
magnetic switch brand
1. Flying Sculpture: a well-known trademark in China, a large enterprise integrating manufacturing, scientific research, import and export trade, service and real estate development and operation. In the long-term practice, Feidiao Electric has actively recognized and cultivated the market with advanced ideas and actions, created a brand-new market, expanded new ideas, established a nationwide marketing network, and formed a strong brand competitiveness.
2. Siemens: Founded in Germany in 1847, it is one of the largest electromechanical/electrical engineering and electronics companies in the world. Headquartered in Berlin and Munich, Siemens AG is a leading enterprise in the field of electronic and electrical engineering in the world, and its main business focuses on four business areas: industry, energy, medical care, infrastructure and city.
3. Schneider: With a glorious history of more than 17 years, he is a global energy efficiency management expert, specializing in power and automation management. In fiscal year 212, Schneider's global revenue reached 24 billion euros, with more than 14, employees in more than 1 countries.
4. Panasonic: In 1918, Japan was one of the world's top 5 enterprises, a world brand, a large multinational company and one of the largest electronic manufacturers in the world. There are more than 23 companies in the world with more than 29,493 employees. Among them, there are more than 54, people in China. In 21, the total sales volume was more than 61 billion US dollars, ranking 26th among the top 5 manufacturing enterprises in the world.
5. Zhengtai: Founded in 1984, China is the largest manufacturer of low-voltage electrical appliances, a well-known trademark in China and a high-tech enterprise. Mainly engaged in fields: widely serving electric power, construction, metallurgy, petrochemical, water conservancy, aerospace, aviation, electronics and other industries; Products cover: R&D, manufacturing and assembly services of industrial electrical appliances, R&D and manufacturing of transmission and distribution gas, R&D, production and supporting services of building consumer electrical appliances, and R&D and manufacturing of photovoltaic cells and component systems.