METRIX振动速度传感器和振动加速度计产品介绍
一、振动速度传感器 / Seismic Velocity Sensors
什么是速度传感器？ / What Are Velocity Sensors?
速度传感器是一种用于测量距离随时间变化的设备。随着振动幅度增加，传感器的输出增加。速度传感器也有各种形状、尺寸、灵敏度级别和技术。它们通常用于测量移动物体的速度，例如车辆或机械。
A velocity sensor is a device used to measure the change in distance over time. As the vibration amplitude increases, the output of the sensor increases. Velocity sensors are also available in a variety of shapes, sizes, sensitivity levels, and technologies. They are commonly used for measuring the speed of moving objects, such as vehicles or machinery.
速度传感器如何工作？ / How Do Velocity Sensors Work?
有两种不同类型的速度传感器——固态和动圈式。固态速度传感器实际上使用加速度计以及集成电路和放大器，产生与传感器看到的速度成比例的输出。
动圈速度传感器由两个主要部件组成 - 动圈和永磁体，线圈在永磁体的磁场中移动并产生自己的能量。任何给定的振动输入都会引起发电机动作（电动势），产生电压，该电压与传感器的输入速度成正比。
There are two different types of velocity sensors – solid state and moving coil. The solid-state velocity sensor actually uses an accelerometer along with an integration circuit and an amplifier that produces an output proportional to the velocity seen by the sensor.
A moving coil velocity sensor is made up of two main components - a moving coil and a permanent magnet in whose magnetic field the coil is moving and generating its own power. Any given vibration input will induce generator action (electromotive force) producing a voltage, which is proportional to the input velocity of the sensor.
5485C 高温速度传感器 / 5485C High Temp. Velocity Sensor
这是一款动圈速度传感器，专为表面温度高达 375°C 的机械应用（如工业燃气轮机）而设计。它可以自行生成信号，无需外部电源，并且由于其零摩擦线圈悬架而可以提供高精度的振动测量。其不锈钢外壳使其经久耐用，因此无需担心经常更换。大多数标准燃气轮机都提供该传感器的安装兼容性。
This is a moving-coil velocity sensor designed for machinery applications with surface temperatures up to 375 C like industrial gas turbines. It self-generates a signal, requiring no external power source, and can provide highly accurate vibration measurements because of its zero-friction coil suspension. Its stainless-steel case makes it long-lasting, so there is no worry about replacing it often. Most standard gas turbines provide mounting compatibility for this sensor.
SV6300 压电速度传感器 / SV6300 Piezo-Velocity Sensor
该传感器与SA6200A类似，但具有内部集成电路，可提供与速度而不是加速度成正比的输出。它适用于大多数通用机械监控应用。该传感器旨在取代动圈装置，动圈装置的运动部件不能始终安装在任何轴上。传感器由隔离的不锈钢外壳保护。该器件与振动监测系统、电子开关和 4-20mA 信号调节器兼容。
This sensor is similar to SA6200A, but with an internal integration circuit that provides an output directly proportional to velocity instead of acceleration. It is appropriate for most general-purpose machinery monitoring applications. This sensor is designed to replace moving coil devices, which have moving parts that cannot always be mounted on any axis. The sensor is protected by an isolated stainless-steel casing. The device is compatible with vibration monitoring systems, electronic switches, and 4-20mA signal conditioners.
二、振动加速度计传感器 / Seismic Accelerometer Sensors
什么是振动加速度计？ / What Are Seismic Accelerometer Sensors?
振动加速度计的功能是测量作用在物体上的力引起的加速度变化，比如旋转或往复式机器。它旨在测量机器或其他结构的外壳振动。
产生的电荷与施加在机器或结构上的力产生的加速度成正比。在旋转和往复式机器中，力是内部的，用加速度计测量外壳运动。
加速度计可以测量动态或静态加速度。动态加速度是在振动的旋转或往复机器上测量的。静态加速度更可预测且恒定。重力是静态加速度的一个例子。
The function of a seismic accelerometer is to measure the change in acceleration resulting from the forces that are working on an object, in our case rotating or reciprocating machines. It's designed to measure the casing vibration of a machine or other structures.
A charge is generated that is proportional to the acceleration resulting from the force that is exerted upon the machine or the structure. In rotating and reciprocating machines, the forces are internal, and we measure the casing motion with accelerometers.
Accelerometers can measure either dynamic or static acceleration. Dynamic acceleration is what measure on a rotating or reciprocating machine that is vibrating. Static acceleration is more predictable and constant. Gravity is an example of a static acceleration.
三种不同类型的加速度计是压电式、压阻式和电容式：
• 压电加速度计传感器非常灵敏，并且在测量冲击或振动方面最有效。Metrix 使用这些类型的传感器是因为它提供了准确且宽的频率响应。
• 压阻式加速度计传感器的灵敏度较低，并且会根据所经历的压力而提高电阻。
• 电容式传感器通过测量电容的变化来测量物体的加速度。
The three different types of accelerometers are piezoelectric, piezoresistive and capacitive:
• Piezoelectric accelerometer sensors are quite sensitive and most effective in measuring shock or vibration. Metrix uses these types of sensors because it provides an accurate and wide frequency response.
• Piezoresistive accelerometer sensors are less sensitive and raise their resistance in response to the pressure they experience.
• Capacitive sensors measure changes in electrical capacitance to measure the acceleration of an object.
SA6200A API 670 加速度计 / SA6200A API 670 Accelerometer
满足 API 670 要求的通用加速度计。设计用于各种机器类型，其频率响应范围为 0.5 至 10 kHz (+/- 3dB)，重量范围为 50g，安装谐振为 13 kHz。
General purpose accelerometer that meets API 670 requirements. Designed for use on a wide variety of machine types with its broad frequency response of 0.5 to 10 kHz (+/- 3dB), 50g range, and mounted resonance of 13 kHz.
SA6200UW水下加速度计 / SA6200UW Underwater Accelerometer
Metrix SA6200UW 水下加速度计专为持续或频繁暴露于高水平冷凝湿度的应用而设计，例如冷却塔结构。它具有模制一体式电缆和 IP68 防护等级，适合连续浸没。
A built-in amplifier provides a 100mV/g low-impedance, constant-current output that is compatible with vibration monitoring systems, electronic switches, and 4-20mA signal conditioners.
SA6350 高温加速度计 / SA6350 High-Temperature Accelerometers
Metrix SA6350高温加速度计适合在高达 325℃的温度下使用。它专为燃气轮机和其他需要加速度信号的表面温度较高的机械而设计。
The Metrix SA6350 High-Temperature Accelerometer is suitable for use in temperatures up to 325C. It is designed for gas turbines and other machinery with high surface temperatures where an acceleration signal is desired.
SA6210薄型加速度计 / SA6210 Low-Profile Accelerometer
Metrix SA6210 薄型加速度计采用侧面引出电缆连接，使其可以在不适合顶部引出电缆设计的物理受限位置使用。
The Metrix SA6210 Low-Profile Accelerometer uses a side-exit cable connection that allows it to be used in physically constrained locations where a top-exit cable design will not fit.
SA6250 高频加速度计 / SA6250 High-Frequency Accelerometers
SA6250使用内置放大器提供100mV/g低阻抗恒流输出，与振动监测系统、电子开关和4-20mA信号调节器兼容。
The SA6250 uses a built-in amplifier to provides a 100mV/g low-impedance, constant-current output that is compatible with vibration monitoring systems, electronic switches, and 4-20mA signal conditioners.
SA6200加速度计 / SA6200 Accelerometer
Metrix SA6200 加速度计能够感应各种振动频率，这使其非常适合在各种机器上使用。
内置放大器提供 100mV/g 低阻抗恒流输出，与振动监测系统、电子开关和 4-20mA 信号调节器兼容。
The Metrix SA6200 Accelerometer is capable of sensing a wide range of vibration frequencies, which makes it ideal for use on a variety of machines.
A built-in amplifier provides a 100mV/g low-impedance, constant-current output that is compatible with vibration monitoring systems, electronic switches, and 4-20mA signal conditioners.
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