美国UE机械式防爆压力开关H121-S156B（American UE mechanical explosion-proof pressure switch H121-S156B ）

Working principle The working principle of the pressure switch is that when the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor moves instantaneously, and the switch joint is connected or disconnected by connecting the guide rod. When the pressure drops to Or when the rated recovery value is raised, the disc resets instantaneously and the switch automatically resets, or in simple terms, when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, and the switch element is pushed directly or after comparison to change the switch. The on-off state of the component can achieve the purpose of controlling the measured pressure. The elastic components used in the pressure switch include single coil spring tube, diaphragm, bellows and so on. Main classification Explosion-proof pressure switch can be divided into explosion-proof type and explosion-proof type. The service grade range is Exd II CT1 ~ T6. Imported explosion-proof pressure switches must pass UL, CSA, CE and other international certifications. It can be used in explosive areas and strong corrosive atmosphere environments. Flameproof pressure switches are available in different pressure, differential pressure, vacuum and temperature ranges. Common applications include electric power, petroleum, chemical industry, metallurgy, boiler, food machinery, environmental protection equipment and other industries. Mechanical type Mechanical pressure switch, the action of the micro switch is caused by purely mechanical deformation. When the pressure increases, the different sensing pressure components (diaphragm, bellows, piston) will be deformed and will move upwards. Through the mechanical structure such as the railing spring, the uppermost micro switch will be activated to output the electrical signal. main feature The main categories of pressure switches include normally open and normally closed. The main features are: 1. It adopts the British pipe thread quick connector or copper pipe welding installation structure, which is flexible in installation, easy to use, and does not need special installation and fixing. 2. The plug-in wire connection can be selected by the user at will. 3. The sealed stainless steel sensor is safe and reliable. 4. Within the pressure range, it can be manufactured according to the pressure value arbitrarily selected by the user. The pressure switch is a device combined with an electrical switch. When the preset fluid pressure is reached, the switch contact will act. It is mainly used in power plants, petrochemical, metallurgical industries and other industrial equipment to output alarm or control signals. It has important uses in the industrial field. It can prevent damage to important devices in production engineering and avoid major production accidents.  

注：除美国UE机械式防爆压力开关H121-S156B，更多United Electric(UE)型号欢迎电话或在线联系。

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