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HOME >> NEWS >> Bently Nevada Eddy‑current Vibration Monitoring Technology

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Bently Nevada Eddy‑current Vibration Monitoring Technology

From:Bently Nevada | author:Make | Release :2026-08-19 | 20 view: | 🔊 Click to read aloud ❚❚ ▶ | Share:
Bently Nevada Eddy‑current Vibration Monitoring Technology

Bently Nevada Eddy‑current Vibration Monitoring Technology

Bently Nevada is the undisputed leader in the field of rotating machinery condition monitoring and protection worldwide. It is renowned for pioneering the eddy current vibration monitoring technology and defining industry standards (API 670). Its core services are focused on ensuring the safety of critical equipment in heavy industries such as energy, power, and petrochemicals.

________________________________________

I. Basic Overview

• Full Name: Bently Nevada Corporation (abbreviated as BN / Bently)

• Establishment: 1961, Minden, Nevada, USA

• Founder: Donald E. Bently (pioneer in mechanical vibration / rotor dynamics)

• Current Ownership: Under Baker Hughes (separated from GE in 2019 and merged in)

• Position: Provider of asset protection, condition monitoring, and predictive maintenance software, hardware, and services

• Industry Position: Global leader in TSI (mechanical protection systems), core developer of API 670 standards

________________________________________

II. Core Product Line (Most Popular in China)

1. 3500 Series (TSI mechanical protection system, highest installation volume) Triple Module Redundancy (TMR) application

• Rack: 3500/05

• Power Supply: 3500/15

• Vibration / Displacement: 3500/42M, 3500/40M

• Shaft Deflection / Axial Position: 3500/45

• Speed / Phase Alignment: 3500/50, 3500/53

• Communication: 3500/92 (Modbus/TCP)

• 3500/22M Transient Data Interface

Bently Nevada 3500 Series Full Model List

Note: Suffix M = Enhanced revision; Compliant with API‑670; Divided into Rack & Enclosure, Power Supply, Rack Interface, Keyphasor, Relay, Monitor Modules, Reciprocating Machinery Modules, Communication Gateway, Display Unit & Accessories.

1. Rack & Enclosure

ModelDescriptionFunction
3500/05System Rack14‑slot main rack, base for all modules
3500/06Protective EnclosureStainless‑steel / epoxy coated enclosure, purge‑ready explosion‑proof housing

2. Power Supply Module

ModelDescriptionFunction
3500/15Power Supply ModuleAC / DC input, dual redundant power feeding for whole system

3. Rack Interface / Transient Data Interface

ModelDescriptionFunction
3500/20RIM Rack Interface ModuleLegacy rack interface, superseded by 3500/22M
3500/22MTDI Transient Data Interface ModuleEnhanced core interface, waveform & transient data acquisition, USB / Ethernet, system mandatory unit

4. Keyphasor Module

ModelDescriptionFunction
3500/25Enhanced Keyphasor Module2‑channel, speed & phase reference, accepts probe / magnetic pickup input, redundant capable

5. Relay Output Modules

ModelDescriptionFunction
3500/32M4‑Channel Relay Module4‑channel alarm relay output, TMR triple‑modular‑redundancy compatible
3500/3316‑Channel Relay Module16‑channel relay output, high‑capacity alarm contact
3500/34TMR Relay ModuleDedicated relay module for TMR triple‑modular‑redundancy configuration

6. General Monitor Modules (Turbine, Compressor, Fan & Rotating Machinery)

ModelDescriptionChannelsApplication
3500/40MProximitor Monitor Module4‑ChannelShaft vibration, shaft displacement (eddy‑current probe)
3500/42MDisplacement / Vibration Combined Monitor Module4‑ChannelEddy‑current displacement + seismic vibration (velocity / acceleration), most popular general‑purpose module
3500/44MAero‑derivative Gas Turbine Monitor Module4‑ChannelSpecialized protection monitoring for aero‑derivative gas turbines
3500/45Position Monitor Module4‑ChannelThrust position, differential expansion, case expansion, valve position monitoring
3500/46MHydro Turbine Monitor Module4‑ChannelHydro‑unit radial vibration, air‑gap monitoring
3500/50MTachometer Module2‑ChannelSpeed, zero‑speed, rotor acceleration monitoring
3500/53Overspeed Protection Module1‑ChannelTMR overspeed protection, unit trip protection
3500/606‑Channel Temperature Monitor Module6‑ChannelRTD / thermocouple temperature measurement
3500/616‑Channel Temperature Monitor with 4‑20mA Output6‑ChannelTemperature monitoring, per‑channel 4‑20mA recorder output
3500/62PVM Process Variable Module6‑Channel4‑20mA / ‑10~+10V input, monitor pressure, flow and other process variables
3500/64MDynamic Pressure Monitor Module4‑ChannelCylinder dynamic pressure, pressure pulsation monitoring
3500/6516‑Channel Temperature Monitor Module16‑ChannelHigh‑density temperature acquisition, mixed RTD / thermocouple input, TMR redundancy support
3500/63Hazardous Gas Monitor Module—Combustible gas detector input

7. Reciprocating Compressor Special Modules

ModelDescriptionApplication
3500/70MRecip Impact / Velocity ModuleReciprocating machinery impact & vibration monitoring
3500/72MPiston Rod Position ModuleReciprocating compressor piston‑rod displacement / wear monitoring
3500/77MCylinder Pressure Monitor ModuleReciprocating unit cylinder pressure monitoring

8. Communication Gateway Modules

ModelDescriptionProtocols
3500/91MEGD Communication GatewayModbus‑TCP, RS232/422/485 serial, Bently proprietary protocol
3500/92Communication Gateway ModuleModbus RTU / TCP, mainstream DCS interface gateway

9. Display Modules

ModelDescriptionFunction
3500/93System Display ModuleLegacy digital panel display
3500/94MVGA Touch Display ModuleColor touch‑screen, local readout for measurements & alarms
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