美国UE真空开关压力开关H117系列（US UE vacuum switch pressure switch H117 series ）

US UE vacuum switch  pressure switch H117 series UE  117 series vacuum switch is widely used in water supply and sewage treatment, pump and paper making, food and beverage, steel plant, aluminum plant, petrochemical industry and medicine, etc. main feature: Class I, Division 2, Groups A, B, C & D ; Class II,  Division 2, Groups F & G; Class III  Hermetically sealed quick dry contact switch with terminal box Vacuum switch in many different types Sensing component materials, including welded stainless steel  diaphragm and bellows.  ●Epoxy-coated aluminum housing  ● The protection level of the vacuum switch is IP65  ● The vacuum switch is a surface-mounted sanitary sensor The technical parameters of 117 series UE vacuum switch are as follows: 表压：30"Hg Vac to 3500 psi(-1 to 241,3 bar) Differential pressure: 0.8" wcd to 500 psid (2 mbar to 34,5 bar) Temperature: -84.4 degrees to 337.8 degrees   related terms Accuracy: A value indicating the degree of precision of the device, including linearity, tolerance, hysteresis, repeatability, etc. At present, the highest precision of Nagano's pressure switch can reach ±0.5%FS, and the model is CB33. Maximum pressure (Max.P): the maximum value of the pressure range. Full Scale (FS): The difference between the maximum and minimum values ​​of the pressure range. Connection difference (dead zone): It refers to the difference between the switch setting action value and the reset value. For example, when the set value is 1MPa and the actual reset value is 0.9MPa, the connection difference is 0.1MPa. Working temperature: refers to the temperature range in which the internal mechanism and sensitive components of the instrument will not undergo continuous deformation during operation. Generally, the recommended operating temperature range of the pressure switch is -5~400C. If the temperature of the medium is too high, it can be considered to add an accessory siphon (filling shape) to achieve the purpose of cooling. SPDT (Single Pole Double Throw): Consists of a normally open, a normally closed contact and a common terminal. DPDT (Double Pole Double Throw): It consists of a symmetrical left and right common terminal, and two sets of normally open and normally closed terminals. Upper limit one contact (normally open): When the pressure rises to the set value, the contact will act and the circuit will be turned on. Lower limit one contact (normally closed): When the pressure drops to the set value, the contact will act and the circuit will be turned on.   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：除美国UE真空开关压力开关H117系列，更多United Electric(UE)型号欢迎电话或在线联系。

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