山武压力开关

阿自倍尔SPS300A/B高精度，高机能型数字压力检测器，以一个具有封入液的双重隔膜（SUS316L）和一个半导体压力传感元件作为压力的传感部分，用于测量容器内的压力。SPS300A输出一个电流信号和一个继电器接点信号，SPS300B输出二个独立的继电器接点信号。

阿自倍尔SPS300A/B高精度，高机能型数字压力检测器，以一个具有封入液的双重隔膜（SUS316L）和一个半导体压力传感元件作为压力的传感部分，用于测量容器内的压力。SPS300A输出一个电流信号和一个继电器接点信号，SPS300B输出二个独立的继电器接点信号。SPS300A911B110
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YAMATAKE压力开关的工作原理：是当系统内压力高于或低于额定的安全压力时，感应器内碟片瞬时发生移动，通过连接导杆推动开关接头接通或断开，当压力降至或升额定的恢复值时，碟片瞬复位，开关自动复位，或者简单的说是当被测压力超过额定值时，弹性元件的自由端产生位移，直接或经过比较后推动开关元件，改变开关元件的通断状态，达到控制被测压力的目的。压力开关采用的弹性元件有单圈弹簧管、膜片、膜盒及波纹管等。
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AZBIL压力开关广泛应用于家用、商用、汽车制冷系统的高、低压力保护控制，蒸汽工况和发电站;蓄能器,接收器,闪蒸罐,分离器,洗涤器,炼油装置。也可适用于各种设备工具的高、低压力保护控制。但在压力开关的选择中，须注意以下几点：
1.防爆的必要性：防爆形式分为隔爆型和本安型，长野产品多数为隔爆型。
2.是否需要带指示：根据客户指示。
3. 接点数量：一接点（一个输出）或两接点（两个输出）。
4.设定值和压力范围的确定：推荐设定范围在压力范围的30%—65%之间，可设定范围为压力范围的15%—90%之间。
5.接断差的形式：可调式或固定式。
6.是否有脉动：如果压力有脉动或振动，需要带节流阀用以抑制脉动压力对仪表的损伤。
7.带隔膜的场合：测定腐蚀性、高黏度或温度过高时，需要选用带隔膜。
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山武压力开关主要类别包括常开式和常闭式。主要特点是：
1、采用英制管螺纹快速接头或铜管焊接式安装结构，安装灵活，使用方便，无需特殊的安装固定。
2、插片式导线式连接方可供用户任意选定。
3、密封式不锈钢感应器安全可靠。
4、压力范围内可根据用户任意选定的压力值进行制造。
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阿自倍尔压力开关可以广泛用于石油、化工、冶金、电力、供水等领域中对各种气体、液体的表压、绝压的测量控制，是工业现场理想的智能化测控仪表。压力开关广泛用于航空航天和军工领域，如M1A1坦克、阿波罗飞船、波音747、空客A320、F22、F117等产品制造。