UE压力开关H100-490H100-491H100-492（US UE pressure switch H100-490 H100-491 H100-492 ）

US UE pressure switch H100 series  H100-490 H100-491 H100-492    working principle The working principle of the pressure switch: 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 or rises When the rated recovery value is reached, 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 element. On-off state to 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 category Flameproof The pressure switch can be divided into explosion-proof type and flameproof 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 The mechanical pressure switch is a purely mechanical deformation that causes the action of the micro switch. 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. Features: * One switch model output * Epoxy-coated and cast-aluminum housing meets NEMA 4X standards * Set point lock to prevent misuse * Heat trace level antifreeze protection * Pressure resistance up to 10.000psi (689.5bar) * Adjustable range pressure: 30″Hg Vac to 5000psi (-1 to 344.7bar) Fault phenomenon:  The pressure switch has no output signal Reason analysis: (1) The micro switch is damaged (2) The switch setting value is adjusted too high (3) The wire contact connected to the micro switch is not connected properly (4) The pressure-sensitive part is poorly assembled and stuck (5) The pressure sensitive element is damaged Solution: (1) Replace the micro switch (2) Adjust to the appropriate setting value (3) Reconnect to make good contact (4) Reassembled to make the action sensitive (5) Replace the pressure sensitive element 

注：除UE压力开关H100-490H100-491H100-492，更多United Electric(UE)型号欢迎电话或在线联系。

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