The Bently Nevada 3500/42M 176449-02 Proximitor/Seismic Monitor is a four-channel machinery protection module designed for the Bently Nevada 3500 Machinery Protection System. It accepts input signals from proximity probes, velocity sensors, and acceleration transducers to perform vibration, displacement, and position monitoring for critical rotating equipment.
The module continuously processes machine condition signals and compares measured values against user-configured alarm limits. It is widely applied in turbines, compressors, pumps, generators, and other rotating equipment where early detection of mechanical faults is essential.
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The Bently Nevada 3500/42M 176449-02 is a multifunctional vibration and position monitoring module within the 3500 Series Machinery Protection System.
The module is designed to receive signals from:
Proximity transducers
Velocity sensors
Accelerometers
It processes these inputs to measure important machinery parameters including:
Radial vibration
Shaft displacement
Axial position
Eccentricity
Velocity
Acceleration
Differential expansion
REBAM® bearing vibration monitoring
Each channel can be configured through 3500 Rack Configuration Software, allowing the same module to support different machinery monitoring requirements without changing hardware.
The 3500/42M provides both machinery protection and condition monitoring functions by continuously comparing measured values against programmable alarm thresholds and generating alarm conditions when abnormal operation occurs.
Manufacturer:
Bently Nevada
Series:
3500 Machinery Protection System
Part Number:
176449-02
Product Type:
Proximitor/Seismic Monitor
Channel Configuration:
4-channel monitoring module
Primary Function:
Vibration, displacement, and position monitoring
Compatible Sensors:
Proximity probes, velocity sensors, accelerometers
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| Parameter | Specification |
|---|---|
| Model | 3500/42M 176449-02 |
| Product Type | Proximitor/Seismic Monitor |
| Channels | 4 independent channels |
| Input Signal Types | Proximity, velocity, acceleration transducers |
| Monitoring Functions | Vibration, displacement, position, acceleration |
| Radial Vibration Sensitivity | 3.94 mV/μm or 7.87 mV/μm |
| Thrust Position Sensitivity | 3.94 mV/μm or 7.87 mV/μm |
| Differential Expansion Sensitivity | 0.394 mV/μm or 0.787 mV/μm |
| REBAM Sensitivity | 40 mV/μm or 80 mV/μm |
| Input Impedance | 10 kΩ standard I/O |
| Power Consumption | Approx. 7.7 W |
| Frequency Range | Approx. 0.5 Hz to 20 kHz |
| Output | Buffered transducer outputs / recorder outputs |
| Alarm Setting | User programmable Alert and Danger limits |
| Configuration Software | 3500 Rack Configuration Software |
| Installation | Bently Nevada 3500 rack |
| Dimensions | Approx. 241.3 × 24.4 × 241.8 mm |
| Weight | Approx. 0.91 kg |
| Operating Temperature | -30°C to +65°C |
The 3500/42M provides four configurable monitoring channels, allowing multiple vibration and position parameters to be monitored simultaneously within one rack module.
The module supports different industrial sensor technologies including:
Eddy-current proximity probes
Velocity sensors
Accelerometers
This flexibility allows use across various rotating machinery applications.
The module performs signal conditioning, filtering, and measurement calculations to provide reliable machine health information.
Users can configure channels for different monitoring purposes, including:
Radial vibration
Shaft absolute vibration
Axial position
Differential expansion
Eccentricity
REBAM monitoring
The module compares monitored values against configured alarm setpoints to support early warning and equipment protection strategies.
Provides comprehensive vibration and position monitoring in one module
Supports multiple sensor types for flexible installation
Improves fault detection for critical rotating machinery
Helps reduce unexpected equipment shutdowns
Supports predictive maintenance programs
Integrates with existing Bently Nevada 3500 systems
Used for steam turbines, gas turbines, generators, and auxiliary rotating equipment monitoring.
Applied in compressors, pumps, expanders, and critical rotating machinery.
Provides vibration and displacement monitoring for process equipment.
Used for motors, gearboxes, and heavy rotating machinery condition monitoring.
Supports continuous machinery protection and operational reliability programs.
A:
It is used for vibration, displacement, and position monitoring of critical rotating machinery within the Bently Nevada 3500 protection system.
A:
The module provides four independent monitoring channels.
A:
It supports proximity probes, velocity sensors, and acceleration sensors.
A:
Yes. The module can be configured for axial position and other displacement monitoring functions depending on application requirements.
A:
Yes. The module is designed to provide vibration monitoring, alarm processing, and machinery protection functions within the 3500 platform.
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