Comprehensive Multi-Parameter Machinery Protection for Hazardous Environments
The Bently Nevada 3500/42-04-02 Proximitor Seismic Monitor is an advanced condition monitoring module engineered for the Bently Nevada 3500 Machinery Protection System. Designed with four independent monitoring channels, it continuously acquires signals from proximity probes and seismic transducers, processes the data in real time, and compares measurements against configurable alarm thresholds to protect critical rotating equipment. The monitor supports a broad range of machinery measurements, enabling both machinery protection and predictive maintenance in demanding industrial applications.
The 3500/42-04-02 configuration features a Proximitor/Seismic I/O Module with External Terminations and an ATEX / IECEx / CSA Zone 2 hazardous-area approval option, making it suitable for international installations that require reliable performance, simplified field wiring, and compliance with global industrial standards. Its flexible measurement capabilities and seamless integration with the 3500 platform make it an ideal solution for maximizing equipment availability and operational safety.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/42-04-02 |
| Product Type | Proximitor Seismic Monitor |
| Series | 3500 Machinery Protection System |
| Monitor Channels | 4 Independent Channels |
| I/O Module Option | 04 – Proximitor/Seismic I/O Module with External Terminations |
| Supported Sensors | Proximity Probes, Accelerometers, Velomitor®, Seismoprobe Sensors |
| Measured Parameters | Radial Vibration, Shaft Position, Thrust Position, Differential Expansion, Velocity, Acceleration, Shaft Absolute, Eccentricity |
| Alarm Functions | User-Configurable Alert and Danger Setpoints |
| Configuration Software | 3500 Rack Configuration Software |
| Typical Power Consumption | Approximately 7.7 W |
| Agency Approval | 02 – ATEX / IECEx / CSA Zone 2 |
| Installation | Full-Height Module for 3500 Rack |
| Module Dimensions | 241.8 × 24.4 × 241.3 mm |
| Module Weight | Approximately 0.91 kg |
| I/O Module Dimensions | 241.3 × 24.4 × 99.1 mm |
| I/O Module Weight | Approximately 0.45 kg |
Typical Applications
The 3500/42-04-02 is widely used for continuous condition monitoring and machinery protection across numerous industrial sectors.
Typical applications include:
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Steam turbine monitoring
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Gas turbine protection systems
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Centrifugal compressor monitoring
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Industrial generator protection
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Pumps and process compressors
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Large electric motors
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Offshore oil and gas facilities
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Petrochemical processing plants
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Power generation stations
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Heavy industrial manufacturing
Performance Highlights
Designed for mission-critical rotating equipment, the 3500/42-04-02 delivers accurate measurements and dependable protection while simplifying installation and maintenance.
Key benefits include:
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Four fully independent monitoring channels
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Supports both proximity and seismic transducer technologies
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External termination design simplifies field wiring and maintenance
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Monitors vibration, shaft position, velocity, acceleration, and expansion
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User-programmable Alert and Danger alarm levels
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High-speed digital signal processing for reliable diagnostics
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Seamless integration with the Bently Nevada 3500 platform
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International Zone 2 hazardous-area certification
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Rugged industrial construction for long-term reliability
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Helps reduce unplanned downtime and maintenance costs
Technical FAQs
1. What is the primary function of the 3500/42-04-02 Proximitor Seismic Monitor?
The module continuously monitors vibration and position signals from rotating machinery, evaluates them against configured alarm limits, and provides machinery protection together with diagnostic information.
2. How many channels does this monitor provide?
The monitor features four independent monitoring channels, allowing multiple machine measurements to be monitored simultaneously.
3. What does the "04" I/O option indicate?
The 04 option specifies a Proximitor/Seismic I/O Module with External Terminations, allowing field wiring to terminate outside the rack for easier installation and maintenance.
4. What does the "02" approval option represent?
The 02 approval option indicates ATEX, IECEx, and CSA Zone 2 hazardous-area certification, making the module suitable for approved international hazardous locations.
5. Which transducers are supported?
The monitor supports Bently Nevada proximity probes, Velomitor® sensors, accelerometers, and Seismoprobe velocity transducers, depending on the configured application.
6. Which machinery parameters can be monitored?
The module supports monitoring of radial vibration, shaft position, thrust position, differential expansion, shaft absolute vibration, eccentricity, velocity, and acceleration.
7. Can alarm settings be customized?
Yes. Users can configure independent Alert and Danger alarm setpoints for each monitoring channel using the 3500 Rack Configuration Software.
8. What are the physical dimensions and weight?
The monitor measures approximately 241.8 × 24.4 × 241.3 mm and weighs approximately 0.91 kg. The external termination I/O module measures approximately 241.3 × 24.4 × 99.1 mm and weighs about 0.45 kg.
9. Is the module compatible with other 3500 system components?
Yes. The 3500/42-04-02 integrates seamlessly with other Bently Nevada 3500 monitors, communication modules, relay modules, and power supply modules.
10. Why choose the Bently Nevada 3500/42-04-02 Proximitor Seismic Monitor?
Its versatile four-channel architecture, broad sensor compatibility, external termination design, hazardous-area certification, and proven reliability make it an excellent choice for protecting mission-critical rotating machinery in demanding industrial environments.
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