EPRO振动传感器，PR9268／300-000
EPRO振动传感器用于测量振动
工作温度可达 200 °C
易于安装
高灵敏度
坚固的外壳适合工业应用
防水保护等级： IP 55 resp. IP 65
两种频率范围: 10 Hz - 1000 Hz 4 Hz - 1000 Hz
连接安全栅 (zone 1)防爆等级 EEx ib II B / II C
是 MMS 6000 和 MMS 3000 旋转机械监测保护系统的一部分
振动传感器在测试技术中是关键部件之一，它的作用主要是将机械量接收下来，并转换为与之成比例的电量。由于它也是一种机电转换装置。所以我们有时也称它为换能器、拾振器等。
德国EPRO振动传感器并不是直接将原始要测的机械量转变为电量，而是将原始要测的机械量做为振动传感器的输入量，然后由机械接收部分加以接收，形成另一个适合于变换的机械量，zui后由机电变换部分再将变换为电量。因此一个传感器的工作性能是由机械接收部分和机电变换部分的工作性能来决定的。
1、相对式机械接收原理
由于机械运动是物质运动的zui简单的形式，因此人们zui先想到的是用机械方法测量振动，从而制造出了机械式测振仪(如盖格尔测振仪等)。传感器的机械接收原理就是建立在此基础上的。相对式测振仪的工作接收原理是在测量时，把仪器固定在不动的支架上，使触杆与被测物体的振动方向一致，并借弹簧的弹性力与被测物体表面相接触，当物体振动时，触杆就跟随它一起运动，并推动记录笔杆在移动的纸带上描绘出振动物体的位移随时间的变化曲线，根据这个记录曲线可以计算出位移的大小及频率等参数。
由此可知，相对式机械接收部分所测得的结果是被测物体相对于参考体的相对振动，只有当参考体不动时，才能测得被测物体的振动。这样，就发生一个问题，当需要测的是振动，但又找不到不动的参考点时，这类仪器就无用武之地。例如:在行驶的内燃机车上测试内燃机车的振动，在地震时测量地面及楼房的振动……，都不存在一个不动的参考点。在这种情况下，我们必须用另一种测量方式的测振仪进行测量，即利用惯性式测振仪。
EPRO振动传感器，PR9268／300-000
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EPRO振动传感器，PR9268／300-000