机械式振动开关Metrix5550型参数
Selection Criteria选择标准
The 5550 and 5550G use identical internal mechanisms, but differ in their housing styles, mounting footprints, hazardous area ratings, and externally accessible features.
在5550和5550G采用相同的内部机制，但在他们的房屋风格不同，安装脚印，危险区域的收视率，和外部访问的功能。
While the housing used with the 5550G permits its use in the more highly explosive IIC gas group, it is not available with a local reset plunger or with an externally accessible setpoint adjustment screw. The 5550G also occupies a larger mounting footprint. For these reasons, the 5550 is generally the preferred choice except in applications where the IIC gas group is
present.
而用于与5550G许可证壳体它更高度爆炸性的IIC气体使用基，它不可用本地复位柱塞或与外部访问的设定值调整螺钉。该5550G也占据了更大的安装足迹。 由于这些原因，一般5550是除了在应用中的IIC气体组当下。
Setpoint Adjustment设定值调整
The switch’s trip point can be adjusted between 0 and 16 g’s (peak) in increments of approx. 1 g (1/8th turn of setpoint adjustment screw). This adjustment screw is externally accessible on the 5550. On the 5550G, the housing’s cover must
be removed to access the adjustment screw.
开关的跳闸点之间可以调整0和16g的（峰值）的约增量。 1克（设定点调节螺丝1/8圈）。 本调节螺钉是可从外部访问5550在5550G的外壳的盖必须被去除以访问调节螺钉。
Remote Reset / Startup Delay 远程复位/启动延迟
A remote reset / startup delay feature is standard on the 5550G and optional on the 5550. When the switch’s reset terminals are energized, a solenoid is activated. This solenoid will reset the switch (if in its tripped state) and then hold it in this untripped state for approximay 30 seconds*, after which normal operation of the switch resumes. This feature is useful for machines that exhibit higher-than-normal vibration during startup and need to suppress tripping functions until normal operating speeds and conditions have been reached. The holding strength of this solenoid must be properly specified at time of ordering to ensure it can force the switch into an untripped position and hold it there for the duration of the startup delay, even in the presence of high vibration levels (see ordering option C).
远程复位/启动延时功能为标准配置的5550G和可选的5550当开关的复位端通电时，电磁阀被激活。这种螺线管将重置开关（如果在其跳闸状态），然后保持在此不跳闸状态下约30秒的开关的恢复正常工作*，在这之后。此功能对于启动过程中表现出高于正常振动，需要压制，直到正常的工作速度和条件已经达到跳闸功能的机器有用。该电磁阀的控股强度必须在订购时可以适当地，以确保它可以强制切换成不跳闸位置，并在那里举行了启动延迟的时间，即使在高振动水平的存在（参见订购备选方案C ）。
*NOTE: It is not possible to indefiniy prolong the duration of the startup delay by continuously applying voltage to the reset terminals. The duration is set at the factory for approximay 30 seconds and uses a thermistor circuit. Consult the manual for additional details and recommendations for using both the reset and startup delay features.
*注意：这是不可能无限期地延长的期限启动延迟通过连续施加电压于复位终端。的持续时间被设置在工厂约30秒，并使用一个热敏电阻的电路。 机械式振动开关Metrix5550型参数
使用这两种复位的其他详细信息和建议和启动延迟功能。
Mechanical vibration switches rely on inertial forces (acceleration) to actuate the trip mechanism. Thought should be given to the amount of seismic acceleration that will occur under machinery malfunction conditions and whether it will be
sufficient to reliably actuate a mechanical switch. In particular, the relationship between acceleration, velocity,
and displacement is such that at low frequencies, very large peak-to-peak displacements (in excess of 100mm) are
required to generate the acceleration amplitudes (1g or greater) detectible by a mechanical switch. Care should
be taken when measuring vibration frequencies below 10 Hz (600 rpm) to understand the levels of structural displacement, velocity, and acceleration that are generated at the frequency(ies) of interest. These should be compared to maximum allowable vibration levels for the machine or structure to determine whether the setpoint adjustment resolution of a mechanical switch will provide suitable results for the application.
机械振动开关依赖惯性力（加速度）来致动跳闸机制。应该考虑到地震加速度下会发生的金额机械故障条件，是否会足以可靠地致动一个机械开关。在
尤其是，加速度，速度之间的关系，和位移是这样的，在低频率，很大的峰 - 峰位移（超过100mm）的是以生成加速度振幅（1克需要或更大的）可检测由一机械开关。护理应测量振动频率低于10时，应考虑赫兹（600转），了解结构性的水平位移，速度，加速度和所产生的在感兴趣的频率（多个）。这些应相比于zui大允许振动水平的机或结构，以确定是否设定点机械开关的调节分辨率将提供适用结果的应用。
In some instances, seismic velocity may be a better measurement. It also has the advantage of allowing integration to displacement units when total structural displacement is of interest. When seismic velocity or displacement measurements are more suitable for the application, a mechanical switch cannot provide these measurements. Instead, Metrix can provide electronic vibration switches, 4-20 mA transmitters, or stand-alone monitoring systems. Consult with your nearest Metrix
sales professional who can review your application and assist with selection of the proper instrumentation.
在一些情况下，地震速度可能是更好的测量。它还具有允许的优点集成总时结构的位移单位位移是感兴趣。当地震速度或位移测量是更适合应用，机械开关不能提供这些测量。相反，Metrix公司可以提供电子振动开关，4-20 mA变送器，或独立监测系统。请与您zui近的Metrix的销售的专业谁可以查看您的应用程序，帮助选择合适的仪器。 机械式振动开关Metrix5550型参数 |
