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The Bently Nevada 3500/25-03-01-01 is a precision Keyphasor® Module designed for integration into the 3500 Machinery Protection System. It is used to acquire and process shaft reference signals from rotating machinery, providing accurate timing information required for advanced vibration monitoring, phase analysis, speed measurement, and machinery diagnostic functions.
The module receives pulse signals generated by Keyphasor sensors, such as proximity probes or magnetic pickup devices, installed near rotating shafts. These reference signals are converted into stable digital timing information, allowing monitoring modules within the protection rack to synchronize their measurements with the exact rotational position of the shaft.
The 3500/25-03-01-01 is designed for applications where accurate shaft position reference is essential for protecting critical rotating equipment. It provides reliable signal processing for turbines, compressors, generators, motors, pumps, and other high-value industrial machinery where unexpected failures can result in significant production losses.
As a modular component of the 3500 platform, the module can be installed directly into the protection rack and communicates through the internal rack backplane. This architecture reduces wiring requirements, improves system reliability, and simplifies maintenance procedures.
The module is designed for continuous industrial operation and provides stable performance in environments affected by vibration, temperature changes, and electrical interference. Its rugged design makes it suitable for long-term operation in demanding industries such as power generation, petrochemical processing, oil and gas, marine engineering, and heavy manufacturing.
| Parameter | Specification |
|---|---|
| Model | 3500/25-03-01-01 |
| Product Type | Keyphasor® Module |
| Brand | Bently Nevada |
| Series | 3500 Machinery Protection System |
| Module Function | Shaft Reference Signal Processing |
| Installation Type | 3500 Rack Plug-In Module |
| Input Channels | 2 Keyphasor Signal Inputs |
| Supported Sensors | Proximity Probe / Magnetic Pickup |
| Signal Processing Method | Digital Pulse Processing |
| Primary Application | Rotational Reference Measurement |
| Synchronization Function | Phase and Speed Reference Generation |
| Communication Method | Internal Rack Backplane |
| Configuration Method | Software Configuration |
| Status Display | Front Panel LED Indicators |
| Power Supply | Supplied Through Rack Power Module |
| Operating Mode | Continuous Online Monitoring |
| Signal Reliability | High Stability Signal Processing |
| Environmental Capability | Industrial Operating Conditions |
| Cooling Method | Natural Air Cooling |
| Housing Structure | Industrial Metal Module Housing |
| Maintenance Method | Hot-Swap Compatible Rack Replacement |
| Dimensions | Approximately 241 × 24 × 250 mm |
| Weight (kg) | Approximately 0.82 kg |
The 3500/25-03-01-01 provides accurate and stable shaft reference signals that are essential for advanced machinery protection systems. The module continuously monitors input pulses from shaft-mounted sensors and converts them into reliable timing references used by other monitoring modules.
The module supports dual-channel Keyphasor signal processing, allowing two independent rotational reference signals to be monitored simultaneously. This capability provides greater flexibility for complex machinery installations, multiple shaft systems, and applications requiring additional monitoring reliability.
Advanced electronic signal processing technology improves pulse recognition accuracy and reduces the influence of electrical noise. This ensures dependable operation in industrial environments where electromagnetic interference may affect measurement quality.
The module works seamlessly with the 3500 system architecture. It communicates directly through the rack backplane, allowing fast data exchange between different monitoring modules without requiring additional external communication equipment.
The compact modular design allows easy installation and replacement. Maintenance personnel can quickly replace the module during scheduled maintenance, reducing downtime and improving equipment availability.
Front-panel indicators provide quick identification of module operating status, helping operators and maintenance engineers perform troubleshooting efficiently.
The main advantage of the 3500/25-03-01-01 is its ability to provide highly accurate shaft rotational reference information. This precision allows other monitoring modules to perform more accurate vibration analysis, phase measurements, and machinery diagnostics.
The module improves machinery protection reliability by ensuring that vibration monitoring data is correctly synchronized with the actual shaft position. This is especially important for detecting mechanical problems such as imbalance, misalignment, shaft cracks, looseness, and rotor instability.
Its dual-input configuration provides additional application flexibility and allows the module to support different machinery monitoring requirements.
The module offers excellent resistance against electrical interference, helping maintain signal accuracy even in complex industrial environments with high electrical noise.
The rack-based modular design reduces installation complexity and allows easy expansion of existing protection systems.
Its reliable electronic design supports long-term continuous operation with minimal maintenance requirements, helping users reduce operational costs and improve machinery availability.
The combination of accurate signal processing, compact construction, and system compatibility makes it a valuable component for critical equipment protection.
The 3500/25-03-01-01 is widely used in industries that require continuous monitoring and protection of rotating machinery.
Typical applications include:
The module is especially suitable for rotating equipment where accurate shaft phase reference signals are required for vibration analysis, balancing operations, speed measurement, and predictive maintenance.
Bently Nevada is a well-known brand specializing in industrial machinery protection and condition monitoring technologies. Its solutions are designed to improve equipment reliability, increase operational safety, and support predictive maintenance strategies for critical rotating machinery.
The product range includes machinery protection systems, vibration monitoring modules, proximity sensing equipment, speed monitoring devices, position monitoring solutions, communication modules, and diagnostic technologies.
These products are widely applied in industries including energy generation, petrochemical production, oil and gas processing, mining, marine systems, and heavy industrial manufacturing.
The 3500 Machinery Protection System is a modular online monitoring platform designed to protect critical rotating equipment through continuous condition monitoring.
The system allows different monitoring modules to be installed together within a common rack structure. Each module performs a dedicated measurement or protection function while sharing system power, communication, and configuration resources.
The main module categories include:
The modular architecture provides flexibility for different machinery applications and allows future system expansion without replacing the complete protection platform.
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 3500/25-02-01-01 | Keyphasor Module | Shaft reference signal processing, dual input channels | Approximately 241 × 24 × 250 mm | Approximately 0.82 |
| 3500/25-02-01-02 | Keyphasor Module | Rotational timing reference, digital signal processing | Approximately 241 × 24 × 250 mm | Approximately 0.82 |
| 3500/25-02-03-RU | Keyphasor Module | Dual-channel shaft synchronization module | Approximately 241 × 24 × 250 mm | Approximately 0.82 |
| 3500/40M-01-00 | Proximitor Monitor | Radial vibration monitoring | Approximately 241 × 24 × 250 mm | Approximately 0.88 |
| 3500/50M-01-00 | Tachometer Module | Speed monitoring and overspeed detection | Approximately 241 × 24 × 250 mm | Approximately 0.85 |
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 3500/22M-01-01-00 | Transient Data Interface Module | Data acquisition, system communication interface | Approximately 241 × 24 × 250 mm | Approximately 0.80 |
| 3500/92-01-01-00 | Communication Gateway Module | Ethernet communication, monitoring system integration | Approximately 241 × 24 × 250 mm | Approximately 0.82 |
| 3500/53-03-00 | Overspeed Detection Module | Independent overspeed protection function | Approximately 241 × 24 × 250 mm | Approximately 0.87 |
| 3500/45-01-00 | Position Monitor Module | Differential expansion and position measurement | Approximately 241 × 24 × 250 mm | Approximately 0.89 |
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor | Shaft displacement measurement and vibration detection | Probe dependent | Approximately 0.45 |
The Bently Nevada 3500/25-03-01-01 is a reliable and accurate Keyphasor® Module designed for the 3500 Machinery Protection System. It provides essential shaft reference signals that allow monitoring modules to perform precise vibration analysis, phase measurement, speed calculation, and advanced machinery diagnostics.
With its dual-channel signal processing capability, excellent signal stability, industrial-grade construction, compact rack design, and seamless compatibility with the 3500 platform, the module provides an effective solution for protecting critical rotating equipment.
The product is widely used in power generation, oil and gas, petrochemical, manufacturing, marine, and heavy industrial applications where continuous monitoring, early fault detection, and reliable machinery operation are required.