The highest range of working pressure 最高工作压力范围 Safety proof pressure 安全耐压 <145PSI(1MPa) 250PSI(1.7MPa) 145PSI(1MPa)~400PSI(2.75MPa) 600PSI(4.1MPa) >145PSI(2.75MPa) 800PSI(5.5MPa) Product Specifications 产品特点 ◆ Single cut double thrower switch mode, double circuits commutate automatically ◆ Security and reliability by adopting fusion welding stainless steel pressure inductor and full air-tight connection. ◆ Adopting Eng. thread quick connector (copper flare connection) or brass tube welding fitting structure ◆ Plugging or wiring connection designed to customers’ choice. ◆ Any pressure value within 3~800 PSI (0.02~5.5MPa) can be made based on customers’ requirement. ◆ Pre-set pressure parameter before delivery allows direct use without resetting on the customers’ site. ◆ 单刀双掷型开关方式，双电路自动转接。 ◆ 熔焊密封式不锈钢感应器，全封闭开关结构安全可靠。 ◆ 英制管螺纹快速接头或铜管焊接式安装结构可供选用。 ◆ 插片或导线连接方式可供任意选择。 ◆ 在3～800PSI(0.02～5.5 MPa)压力范围内可根据用户要求的压力值进行制造。 ◆ 产品在出厂前其工作压力参数已在工厂按要求设定好，使用时无需再设定。 Operating Principle 工作原理 ◆ The series of pressure switches are made based on the theory that an inside reversible stainless steel motion diaphragm turns over when inducing a certain pressure. The electric contact (H) opens and electric contact (L) closes simultaneously when the diaphragm moves. When the system pressure reduces, the diaphragm resets instantly, with the function of which, the electric contact disconnects from contact (L) and connects with contact (H) automatically. ◆ 该系列压力开关主要利用内置不锈钢膜片在感应到一定压力后可向相反方向翻转的特性制造。当膜片动作时，会通过一个导杆推动电气触点(H)断开，同时接通 电气触点(L)。当系统压力降低时，膜片瞬时复位，电气触点在开关簧片的作用下自动从触点L断开并与触点H闭合。 设计参数 ◆ 工作压力范围：3～800PSI(0.02～5.5MPa) ◆ 爆破压力：5000PSI ◆ 环境温度：-30℃～+80℃ ◆ 系统介质温度：-50℃～+120℃ ◆ 额定电流下的寿命次数：30,000次，50,000次，100,000次可供选择 ◆ 电气规格：24Vac时常规电气容量125VA 120/240Vac时常规电气容量375VA ◆ 安全耐压：断开触点间为AC700V/S，端子对外壳为AC2000V/S ◆ 安全耐压：压力控制器可承受的不影响动作设定值的压力。 Designed Parameter ◆ Working pressure range: 3~800PSI（0.02~5.5MPa） ◆ Burst Pressure: 5000PSI ◆ Ambient temperature: -30℃~+80℃ ◆ System medium temperature: -50℃~+120℃ ◆ Life cycles under the rated electric current: 30,000 times, 50,000 times and 100,000 times optional ◆ Electrical Rating: At 24Vac, normal electric capacity: 125VA At 120/240Vac, normal electric capacity: 375VA ◆ Dielectric Strength: Between disconnected contacts: AC700V/S Terminal to outer shell: AC2000V/S ◆ Safety proof pressure: The pressure that the control can endure while not affects the rated motion value Application 用途 ◆ The product is mainly used in refrigeration system of air-conditioner and precise pressure control system; It can also be used as the precise high-low pressure protection of variety of equipments and tools. ◆ 该系列产品主要用于空调制冷系统和精密压力控制系统中，也可用于各种设备工具的精确高低压力保护。 Typical Structure Drawing 典型结构图 Typical Outline Drawing 典型外形图 YK Series Single Cut Double Thrower Auto-reset Pressure Control (YK-01H YK-02H YK-03H YK-01L YK-02L YK-03L) YK系列单刀双掷自动复位 压力控制器 Electric Theory Drawing 电气原理图 Normal close 常闭型 C 1 2 3 H L 3 2
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