Bentely Nevada 3500/25-02-01-00 增强型键相（Keyphasor）模块

Bently Nevada 3500/25-02-01-00（增强型键相模块）

3500/25-02-01-00是 Bently Nevada（现属 Baker Hughes）3500 系列 TSI（机械保护系统）的半高、双通道增强型键相模块，为振动监测、相位分析、转速测量提供高精度时间基准。

一、型号解析（3500/25-AA-BB-CC）

3500/25：增强型键相模块（Keyphasor）

02：内部端子（Internal Terminations）

01：标准温度版（0°C ~ +65°C）

00：无特殊选项

二、核心功能

信号采集：接收电涡流探头 / 磁电传感器的模拟信号，转为数字键相脉冲。

相位 / 转速基准：每转输出 1 个（或多个）脉冲，用于计算1X 振幅 / 相位、矢量分析、阶次跟踪。

系统容量：单模块 2 通道；3500 机架最多插 2 块（4 通道），配对配置可达 8 通道。

缓冲输出：2 路缓冲键相输出（504Ω），可接示波器 / 外部诊断设备。

三、关键技术参数

通道数：2 通道（半高）

输入信号：电涡流 / 磁电传感器，+0.8V ~ -21V（非隔离）

频率 / 转速范围：0.017Hz~20kHz（1~1,200,000CPM）

测量精度：相位 **±0.1°，转速±0.05%**

输入阻抗：≥21.8kΩ

功耗：典型3.2W（24VDC）

工作温度：0°C ~ +65°C（内部端子版）

尺寸（H×W×D）：120mm×24.5mm×256mm；重量≈0.46kg

四、生命周期与供货（截至 2026-05-06）

状态：在产（Active）、非 EOL，原厂正常供货。

平台：主流成熟型号，长期支持；升级替代为 3500 XL 系列（非直接插拔）。

应用场景：汽轮机、燃气轮机、压缩机、电机等大型旋转机械 TSI 系统。

五、选型与兼容

兼容机架：3500/05 标准机架

配套模块：3500/15 电源、3500/22M TDI、3500/40/42 振动监测模块等

传感器适配：3300XL/7200 系列电涡流探头、磁电式速度传感器

Bently Nevada 3500/25-02-01-00 (Enhanced Keyphasor Module)

3500/25-02-01-00 is a half height, dual channel enhanced key phase module of Bently Nevada (now part of Baker Hughes) 3500 series TSI (Mechanical Protection System), providing high-precision time reference for vibration monitoring, phase analysis, and speed measurement.

1、 Model Analysis (3500/25-AA-BB-CC)

3500/25: Enhanced Keyphasor Module

02: Internal Terminals

01: Standard temperature version (0 ° C~+65 ° C)

00: No special options available

2、 Core functions

Signal acquisition: Receive analog signals from eddy current probes/magneto electric sensors and convert them into digital key phase pulses.

Phase/speed reference: Output one (or more) pulse per revolution for calculating 1X amplitude/phase, vector analysis, and order tracking.

System capacity: 2 channels per module; The 3500 rack can accommodate up to 2 pieces (4 channels) and can be paired with up to 8 channels.

Buffer output: 2-channel buffer key phase output (504 Ω), can be connected to oscilloscope/external diagnostic equipment.

3、 Key technical parameters

Number of channels: 2 channels (half height)

Input signal: Eddy current/magneto electric sensor,+0.8V~-21V (non isolated)

Frequency/speed range: 0.017Hz~20kHz (1~1200000CPM)

Measurement accuracy: Phase * * ± 0.1 °, speed ± 0.05%**

Input impedance: ≥ 21.8k Ω

Power consumption: Typical 3.2W (24VDC)

Working temperature: 0 ° C~+65 ° C (internal terminal version)

Dimensions (H × W × D): 120mm × 24.5mm × 256mm; Weight ≈ 0.46kg

4、 Life cycle and supply (as of May 6, 2026)

Status: In production (Active), non EOL, original factory normal supply.

Platform: Mainstream mature models, long-term support; Upgrade and ｒｅｐｌａｃｅ with 3500 XL series (non direct plug-in).

Application scenarios: TSI systems for large rotating machinery such as steam turbines, gas turbines, compressors, and motors.

5、 Selection and compatibility

Compatible rack: 3500/05 standard rack

Supporting modules: 3500/15 power supply, 3500/22M TDI, 3500/40/42 vibration monitoring module, etc

Sensor adaptation: 3300XL/7200 series eddy current probe, magneto electric speed sensor