UE防爆开关J120-274铜波纹管开关（UE explosion-proof switch J120-274 copper bellows switch ）

UE explosion-proof switch J120-274 copper bellows switch  J120-274 6-300psi 0.4-20.7bar  wetted material: phosphor bronze bellows 1/4NPTF nickel-plated brass pressure process interface pressure resistance 24.1bar working limit pressure 20.7bar  explosion-proof pressure switch overview  The explosion-proof pressure switch uses a high-precision pressure sensor as a detection element, and uses a high-stable circuit to generate a switch signal to realize continuous pressure measurement and switch control. It has the advantages of high precision, small hysteresis, fast response, stable and reliable performance, small size, easy operation and simple and flexible installation. 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.   Parameters of the pressure switch: 1. Measuring medium: non-corrosive gas or liquid to nitrile rubber or 316L stainless steel  2. Housing: Die-cast aluminum, epoxy coated, cover with sealing gasket  3. Enclosure rating: meet NEMA 4X requirements  4. Set point accuracy: ±1%  5. Switching difference: divided into two types: adjustable and non-adjustable (refer to the selection table data)  6. Repeatability error: <1%  7. Pressure port: standard 1/2NPTF internal thread; can be customized according to site needs  8. Electrical interface: 1/2″NPTF threaded interface, can be customized according to site needs  9. Switch output: a single-pole double-throw (SPDT) output; it can be set separately within the adjustment range; the switch can be connected to "normally open" or "normally closed"  10. Ambient temperature: -40℃～+70℃  11. Ambient humidity: 5% to 95%  12. Service life: 100 0000 cycles  13. Measuring range: 0～0.01...60 Mpa  14. Pressure form: gauge pressure, absolute pressure  15. Output signal: (V) relay contact or switch signal with low level ≤ 0.5 and high level ≥ 4.5  16. Accuracy: 0.25%FS, 0.5%FS  17. Setting range: lower limit: 0 ~ upper limit setting low upper limit: lower limit setting value ~ upper limit setting value    

注：除UE防爆开关J120-274铜波纹管开关，更多United Electric(UE)型号欢迎电话或在线联系。

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