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Bently Nevada 3500/25-01-01-02 149369-01 + 125800-01 Half-Height Keyphasor Module Assembly – Product Introduction, Technical Specifications, Applications, Advantages, Series Information and Recommended Models
Bently Nevada 3500/25-01-01-02 149369-01 + 125800-01
Product Introduction
The Bently Nevada 3500/25-01-01-02 149369-01 + 125800-01 is a Half-Height Keyphasor Module Assembly designed for the 3500 Series Machinery Protection System. It is a specialized rotational reference monitoring solution used to provide accurate shaft timing information for critical rotating machinery applications.
The assembly combines the main Keyphasor module function with the corresponding hardware configuration, providing reliable processing of rotational reference signals from shaft-mounted sensors.
The Keyphasor system is an essential component in advanced rotating machinery monitoring because it provides a precise reference point during each shaft revolution. This reference signal allows the monitoring system to accurately determine:
- Shaft rotational speed
- Rotor position
- Vibration phase angle
- Machine operating condition
- Dynamic rotor behavior
- Mechanical response during operation
The 3500/25-01-01-02 149369-01 + 125800-01 receives input signals from Keyphasor probes installed close to rotating shafts. The module processes these signals and provides stable timing information to other monitoring modules within the protection rack.
In industrial rotating machinery, vibration measurements without rotational reference information may not provide complete diagnostic results. The Keyphasor signal allows engineers to compare vibration characteristics with exact shaft position, improving the accuracy of machinery analysis.
The module is mainly used for advanced diagnostic applications including:
- Rotor imbalance detection
- Shaft misalignment analysis
- Mechanical looseness identification
- Coupling condition evaluation
- Rotor dynamic analysis
- Phase vibration analysis
The product adopts a half-height modular design, allowing efficient use of rack space while maintaining reliable signal processing performance.
The plug-in structure enables convenient installation, replacement, and maintenance. The module can be integrated into existing rack systems without major changes to the protection configuration.
The assembly is designed for continuous industrial operation and is suitable for high-value rotating equipment where reliability, safety, and operational availability are important.
Typical monitored equipment includes:
- Steam turbines
- Gas turbines
- Compressors
- Generators
- Large motors
- Industrial pumps
- Rotating process equipment
By providing accurate rotational reference information, the module improves machinery diagnostics, supports predictive maintenance strategies, and helps reduce unexpected equipment failures.
Brand
Bently Nevada
Bently Nevada is an industrial technology brand specializing in machinery protection, vibration monitoring, condition monitoring, and predictive maintenance solutions.
The products are widely used for monitoring critical rotating machinery where stable operation and equipment reliability are essential.
Main application industries include:
- Power generation
- Oil and gas
- Petrochemical processing
- Marine engineering
- Mining
- Metallurgy
- Heavy manufacturing
- Industrial production facilities
The product range includes:
- Machinery protection systems
- Vibration monitoring modules
- Keyphasor modules
- Transient data interface modules
- Communication modules
- Power supply modules
- Relay modules
- Proximity measurement systems
- Industrial diagnostic solutions
Product Series
3500 Series Machinery Protection System
The 3500 Series is a modular online machinery protection platform designed for continuous monitoring and protection of critical rotating equipment.
The system provides:
- Real-time machinery monitoring
- Alarm processing
- Equipment protection
- Vibration measurement
- Speed monitoring
- Phase reference measurement
- Diagnostic data collection
- Communication functions
The modular rack architecture allows different monitoring modules to be combined according to application requirements.
Main module categories include:
- Rack Interface Modules
- Power Supply Modules
- Keyphasor Modules
- Vibration Monitoring Modules
- Shaft Position Monitoring Modules
- Transient Data Interface Modules
- Relay Modules
- Overspeed Protection Modules
- Communication Modules
- Data Processing Modules
The 3500 Series provides a flexible and reliable platform for industrial machinery protection and condition monitoring.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/25-01-01-02 149369-01 + 125800-01 |
| Product Type | Half-Height Keyphasor Module Assembly |
| Brand | Bently Nevada |
| Product Series | 3500 Series |
| Main Function | Rotational Reference Signal Processing |
| Application Type | Machinery Protection and Condition Monitoring |
| Module Structure | Half-Height Rack Module |
| Assembly Type | Keyphasor Module + Configuration Assembly |
| Installation Method | Rack Mounted |
| Mounting Position | 3500 Rack Slot |
| Input Signal Type | Keyphasor Sensor Signal |
| Speed Measurement | Supported |
| Phase Measurement | Supported |
| Shaft Timing Reference | Supported |
| Rotor Position Reference | Supported |
| Vibration Phase Analysis | Supported |
| Signal Processing | Supported |
| Communication Method | Rack Backplane Communication |
| Power Supply Method | Rack Backplane Powered |
| Operating Mode | Continuous Industrial Operation |
| Cooling Method | Natural Air Cooling |
| Connection Type | Rack Connector |
| Housing Material | Industrial Metal Housing |
| Maintenance Method | Plug-in Replacement |
| System Compatibility | 3500 Series Rack System |
| Environmental Design | Industrial Grade |
| Approximate Dimensions | 241 × 24 × 260 mm |
| Approximate Weight | 0.90 kg (Approx.) |
Product Features
The 3500/25-01-01-02 149369-01 + 125800-01 provides accurate rotational reference processing for advanced machinery monitoring systems.
The primary function of the module is to receive Keyphasor sensor signals and convert them into reliable timing information for machinery analysis.
Main functions include:
- Shaft speed measurement
- Rotational position detection
- Phase angle reference
- Vibration phase analysis
- Rotor dynamic evaluation
- Balancing support
The module improves machinery diagnostics by allowing vibration signals to be analyzed in relation to shaft rotation.
This capability helps identify mechanical conditions such as:
- Rotor imbalance
- Misalignment
- Coupling problems
- Mechanical looseness
- Shaft instability
- Abnormal rotor movement
The half-height design allows efficient rack installation and provides additional flexibility when configuring protection systems.
The modular plug-in construction simplifies maintenance and reduces replacement time.
The module communicates through the rack backplane, providing reliable connection with other monitoring modules.
The industrial-grade design supports stable operation in environments with vibration, temperature changes, and continuous operating requirements.
Product Advantages
Accurate Rotational Reference
The module provides precise shaft timing information required for advanced rotating machinery diagnostics.
This improves the accuracy of phase measurements and vibration analysis.
Enhanced Machinery Analysis
The Keyphasor reference allows engineers to better understand the relationship between vibration behavior and shaft rotation.
Improved Fault Identification
The module helps detect mechanical problems earlier by providing accurate rotational information.
Supports Predictive Maintenance
The collected reference data supports condition monitoring programs and maintenance planning.
Reliable Industrial Performance
The module is designed for continuous operation in critical machinery applications.
Space-Efficient Design
The half-height structure allows more efficient rack utilization.
Easy Maintenance
The plug-in design enables fast replacement and reduces system downtime.
Strong System Compatibility
The module can work together with other 3500 Series monitoring modules.
Product Applications
The 3500/25-01-01-02 149369-01 + 125800-01 is suitable for industrial applications requiring accurate shaft reference information.
Typical applications include:
- Steam Turbine Monitoring
- Gas Turbine Protection
- Generator Condition Monitoring
- Compressor Monitoring Systems
- Centrifugal Compressor Protection
- Industrial Motor Monitoring
- Pump Condition Monitoring
- Rotor Dynamic Analysis
- Machinery Balancing
- Vibration Phase Measurement
- Rotating Equipment Diagnostics
- Power Plant Machinery Protection
- Petrochemical Equipment Monitoring
- Oil Refinery Machinery
- Offshore Platform Equipment
- Natural Gas Compression Systems
- Marine Propulsion Equipment
- Heavy Industrial Machinery Monitoring
- Critical Rotating Equipment Protection
Operating Characteristics
The module operates continuously within the protection rack and provides rotational reference information throughout the machine operating cycle.
The Keyphasor sensor signal is processed by the module and transferred to other monitoring functions.
The information allows engineers to:
- Measure rotational speed
- Identify shaft position
- Analyze vibration phase
- Evaluate rotor response
- Perform balancing analysis
- Improve equipment diagnostics
The modular structure provides easy installation and supports long-term operation in industrial environments.
Recommended Models from the Same Series or Related Products
| Model | Product Type | Main Function | Installation | Approximate Dimensions | Approximate Weight |
|---|---|---|---|---|---|
| 3500/25-01-00 | Half-Height Keyphasor Module | Rotational reference processing | Rack Mounted | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25-01-01-00 | Keyphasor Module | Shaft timing reference | Rack Mounted | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25-01-01-02 149369-01 + 125800-01 | Keyphasor Module Assembly | Speed and phase reference | Rack Mounted | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25 125800-02 | Half-Height Keyphasor Module | Rotational monitoring | Rack Mounted | 241 × 24 × 260 mm | 0.90 kg |
| 3500/42M | Vibration Monitoring Module | Shaft vibration measurement | Rack Mounted | 241 × 24 × 260 mm | 1.00 kg |
Technical Parameters of Recommended 3500 Series Models
| Model | Power Supply | Main Function | Application | Approximate Dimensions | Approximate Weight |
|---|---|---|---|---|---|
| 3500/25-01-00 | Rack Powered | Keyphasor signal processing | Speed and phase monitoring | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25-01-01-00 | Rack Powered | Shaft reference processing | Machinery Diagnostics | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25-01-01-02 149369-01 + 125800-01 | Rack Powered | Advanced rotational reference | Rotor Analysis | 241 × 24 × 260 mm | 0.90 kg |
| 3500/25 125800-02 | Rack Powered | Phase and speed measurement | Machinery Protection | 241 × 24 × 260 mm | 0.90 kg |
| 3500/42M | Rack Powered | Vibration monitoring | Shaft Protection | 241 × 24 × 260 mm | 1.00 kg |
Popular Models from the Same Brand
| Model | Product Type | Main Application | Approximate Dimensions | Approximate Weight |
|---|---|---|---|---|
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor System | Shaft vibration measurement | 120 × 60 × 40 mm | 0.45 kg |
| 330103-00-05-10-02-00 | Proximity Probe | Shaft displacement monitoring | 120 × 25 × 25 mm | 0.30 kg |
| 3500/15-05-05-00 | Power Supply Module | Rack power management | 241 × 24 × 260 mm | 1.10 kg |
| 3500/42M | Vibration Monitoring Module | Vibration and position monitoring | 241 × 24 × 260 mm | 1.00 kg |
| 3500/53 | Overspeed Detection Module | Turbine safety protection | 241 × 24 × 260 mm | 1.00 kg |
Technical Parameters of Popular Brand Models
| Model | Product Function | Installation Method | Application Area | Approximate Dimensions | Approximate Weight |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximitor Sensor | Shaft Vibration Measurement | Field Mounted | Rotating Machinery Monitoring | 120 × 60 × 40 mm | 0.45 kg |
| 330103-00-05-10-02-00 | Shaft Position Measurement | Field Mounted | Machinery Protection | 120 × 25 × 25 mm | 0.30 kg |
| 3500/15-05-05-00 | Rack Power Supply | Rack Mounted | System Power Management | 241 × 24 × 260 mm | 1.10 kg |
| 3500/42M | Vibration Monitoring Module | Rack Mounted | Shaft Protection | 241 × 24 × 260 mm | 1.00 kg |
| 3500/53 | Overspeed Protection Module | Rack Mounted | Turbine Safety Monitoring | 241 × 24 × 260 mm | 1.00 kg |
Conclusion
The Bently Nevada 3500/25-01-01-02 149369-01 + 125800-01 is a high-performance Half-Height Keyphasor Module Assembly designed for the 3500 Series Machinery Protection System.
It provides accurate rotational reference information required for shaft speed measurement, vibration phase analysis, rotor evaluation, and advanced machinery diagnostics.
With reliable signal processing capability, compact rack design, flexible integration, and easy maintenance characteristics, the module provides an important solution for critical rotating equipment monitoring.
The product helps improve machinery diagnostic accuracy, supports predictive maintenance programs, reduces equipment downtime, and enhances the reliability and safety of industrial rotating machinery.