描述
BENTLY 3500/42M 140734-02是一款高性能四通道振动与位置监测模块，专为工业领域大型旋转机械（如汽轮机、压缩机、泵等）的精密监测设计。以下是其核心功能与技术特点的综合解析：
一、产品概述
模块类型
该模块属于Bently Nevada 3500系列，是前置器/地震监测器，可接收位移、速度、加速度传感器信号，提供振动、位置及差胀等参数的实时监测。
通道配置
四通道设计：每个通道可独立编程，支持成对配置（如通道1-2和3-4分别执行不同功能）。
功能扩展：支持径向振动、轴向位移、差胀、偏心、加速度、速度、轴绝对振动等多类型测量。
二、核心功能
振动与位置监测
信号处理：对输入信号进行滤波（如1X/2X矢量滤波、非1X陷波滤波），生成径向振动、间隙值、偏心度等参数。
动态数据支持：支持瞬态动态（波形）数据采集，通过以太网传递至主机软件进行趋势分析。
报警与保护机制
多级报警：每个通道可设置4个优先级报警，支持用户自定义报警阈值，并通过LED指示灯（如OK、TX/RX、旁路模式）显示状态。
危险设定点：对关键参数（如膨胀差、推力位置）可设置双重危险报警值。
数据通信与兼容性
模块化接口：需配套3500/05系统框架、3500/15电源等模块，形成完整监测系统。
协议支持：通过3500框架组态软件实现与上位机的数据交互，支持工业标准协议（如以太网）。
三、技术参数
输入输出特性
输入信号：支持1-4个位移、速度或加速度传感器，输入阻抗为10kΩ（标准I/O）。
灵敏度：径向振动为3.94mV/μm或7.87mV/μm，差胀为0.394mV/μm或0.787mV/μm。
输出：+4至+20mA记录仪输出，LED状态指示，传感器电源-24Vdc。
环境适应性
运行温度：-30°C至+65°C（带内部端子I/O模块），0°C至+65°C（带内部安全栅模块）。
防护等级：传感器接头内置短路保护，符合工业防尘防水标准。
125388-01H
BENTLY 3500/42M 140734-02 is a high-performance four-channel vibration and position monitoring module designed for precision monitoring of large rotating machinery in the industrial field(such as turbines,compressors,pumps,etc.).The following is a comprehensive analysis of its core functions and technical features:
I.Product Overview
Module Type
This module belongs to the Bently Nevada 3500 series and is a preamplifier/seismic monitor that can receive displacement,velocity,and acceleration sensor signals and provide real-time monitoring of parameters such as vibration,position,and differential expansion.
Channel Configuration
Four-channel design:Each channel can be programmed independently and supports paired configuration(such as channels 1-2 and 3-4 perform different functions respectively).
Function expansion:supports multiple types of measurements such as radial vibration,axial displacement,differential expansion,eccentricity,acceleration,velocity,and absolute shaft vibration.
II.Core Functions
Vibration and Position Monitoring
Signal Processing:Filter the input signal(such as 1X/2X vector filtering,non-1X notch filtering)to generate parameters such as radial vibration,gap value,and eccentricity.
Dynamic data support:Supports transient dynamic(waveform)data acquisition,and transmits it to the host software through Ethernet for trend analysis.
Alarm and protection mechanism
Multi-level alarm:Each channel can set 4 priority alarms,support user-defined alarm thresholds,and display the status through LED indicators(such as OK,TX/RX,bypass mode).
Dangerous set points:Double dangerous alarm valuescan be set for key parameters(such as expansion difference,thrust position).
Data communication and compatibility
Modular interface:3500/05 system framework,3500/15 power supply and other modules are required to form a complete monitoring system.
Protocol support:Data interaction with the host computer is realized through the 3500 framework configuration software,and industrial standard protocols(such as Ethernet)are supported.
III.Technical parameters
Input and output characteristics
Input signal:Supports 1-4 displacement,velocity or acceleration sensors,and the input impedance is 10kΩ(standard I/O).
Sensitivity:3.94mV/μm or 7.87mV/μm for radial vibration,0.394mV/μm or 0.787mV/μm for differential expansion.
Output:+4 to+20mA recorder output,LED status indication,sensor power supply-24Vdc.
Environmental adaptability
Operating temperature:-30°C to+65°C(with internal terminal I/O module),0°C to+65°C(with internal safety barrier module).
Protection level:The sensor connector has built-in short-circuit protection and meets industrial dust and water resistance standards.
