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The Bently Nevada 3500/25-02-01-CN is an industrial-grade Keyphasor® Module belonging to the 3500 Machinery Protection System. It is designed to provide highly accurate shaft reference signals for continuous machinery monitoring and protection. The module processes pulse signals generated by proximity probes or magnetic pickup sensors installed on rotating shafts, creating a precise timing reference that enables vibration monitoring modules to perform phase analysis, rotational speed calculations, vector measurements, and advanced dynamic diagnostics.
As one of the essential modules within the 3500 rack architecture, the 3500/25-02-01-CN ensures that all compatible monitoring modules operate using the same rotational reference signal. This synchronization significantly improves the accuracy of machinery condition monitoring and allows maintenance personnel to identify mechanical abnormalities before they develop into equipment failures.
The module is designed for uninterrupted operation in demanding industrial environments where equipment reliability is critical. It combines advanced digital signal processing with excellent electromagnetic interference resistance, allowing stable operation in electrically noisy environments commonly found in power plants, refineries, petrochemical facilities, mining operations, and heavy manufacturing industries.
The CN configuration is intended for applications requiring localized product identification while maintaining full compatibility with the standard 3500 platform. It offers the same dependable performance, modular installation, and high-precision signal processing expected from the 3500 Series.
Its compact rack-mounted construction allows easy installation, convenient maintenance, and straightforward replacement without requiring extensive system modifications. The module communicates directly through the rack backplane, eliminating the need for external synchronization hardware and reducing installation complexity.
| Parameter | Specification |
|---|---|
| Model | 3500/25-02-01-CN |
| Product Type | Keyphasor® Module |
| Brand | Bently Nevada |
| Series | 3500 Machinery Protection System |
| Installation Method | Rack Mounted |
| Rack Compatibility | 3500 System Rack |
| Input Channels | Two Independent Keyphasor Inputs |
| Supported Sensors | Proximity Probe or Magnetic Pickup |
| Signal Processing | Digital Pulse Processing |
| Primary Function | Shaft Reference Signal Generation |
| Timing Accuracy | High Precision Digital Synchronization |
| Communication | Internal Rack Backplane |
| Status Indication | Front Panel LED Indicators |
| Power Supply | Powered by 3500 Rack |
| Noise Immunity | High Electromagnetic Compatibility |
| Configuration | Software Configurable |
| Maintenance | Modular Plug-in Replacement |
| Cooling Method | Passive Air Cooling |
| Enclosure Material | Industrial Metal Housing |
| Industrial Environment | Continuous Operation |
| Dimensions | Approximately 241 × 24 × 250 mm |
| Weight (kg) | Approximately 0.82 kg |
The 3500/25-02-01-CN is engineered to provide reliable shaft timing reference signals that are essential for advanced rotating machinery diagnostics. It continuously receives pulse inputs from shaft-mounted sensing devices and distributes synchronized timing information throughout the machinery protection system.
Its dual independent input channels allow simultaneous processing of two separate shaft reference signals, increasing monitoring flexibility for complex machinery installations.
Advanced digital electronics provide stable signal processing with excellent resistance to electrical interference, ensuring accurate rotational reference information even under harsh industrial operating conditions.
The module integrates seamlessly with all compatible monitoring modules within the 3500 Machinery Protection System, eliminating additional synchronization equipment and simplifying overall system architecture.
The rugged industrial design supports long-term continuous operation while minimizing maintenance requirements. The modular structure also allows rapid replacement during maintenance activities, helping reduce equipment downtime.
The primary advantage of the 3500/25-02-01-CN is its ability to deliver highly accurate and stable shaft reference signals that improve the precision of vibration monitoring and machinery diagnostics.
Its seamless compatibility with the complete 3500 monitoring platform allows users to expand or modify protection systems without changing existing system architecture.
Dual-channel capability provides greater flexibility for machinery requiring multiple rotational reference signals or redundant monitoring configurations.
High immunity to electromagnetic interference improves measurement stability and minimizes false triggering caused by electrical noise.
The module enhances predictive maintenance by supplying precise rotational reference data used for identifying imbalance, shaft misalignment, eccentricity, looseness, mechanical rubbing, and other developing equipment faults.
Its compact rack-mounted design maximizes cabinet space utilization while maintaining high operational performance.
Industrial-grade construction provides excellent durability, helping reduce maintenance frequency and lowering long-term ownership costs.
Easy installation, software configuration, and modular replacement simplify commissioning and servicing procedures.
The 3500/25-02-01-CN is suitable for a wide variety of rotating machinery protection applications where precise shaft timing references are required.
Typical applications include:
The module is especially valuable wherever precise shaft phase reference signals are required for vibration analysis, rotor balancing, speed monitoring, and comprehensive machinery protection.
Bently Nevada is recognized worldwide for developing machinery protection and condition monitoring technologies for rotating equipment. The brand has extensive experience in industrial monitoring solutions designed to improve machinery reliability, operational safety, and maintenance efficiency.
Its product portfolio includes vibration monitoring systems, proximity sensing devices, rack-mounted protection systems, communication modules, software platforms, speed monitoring equipment, temperature monitoring modules, position monitoring solutions, and comprehensive machinery diagnostic technologies.
These products are widely applied across power generation, petrochemical processing, offshore energy production, mining, marine engineering, heavy manufacturing, and industrial automation.
The 3500 Series is a modular online machinery protection platform developed for continuous monitoring of critical rotating assets. Each module performs a specialized monitoring function while communicating through a common rack backplane.
The system supports flexible expansion, allowing users to configure protection systems according to specific machinery requirements.
Major module categories include:
Its modular architecture simplifies maintenance, system upgrades, expansion, and long-term operation while maintaining excellent reliability.
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 3500/22M-01-01-00 | Transient Data Interface Module | Ethernet communication, rack interface | Approximately 241 × 24 × 250 mm | Approximately 0.80 |
| 3500/15-05-05-00 | Power Supply Module | AC/DC rack power supply | Approximately 241 × 24 × 250 mm | Approximately 1.20 |
| 3500/40M-01-00 | Proximitor Monitor | Four-channel radial vibration monitoring | Approximately 241 × 24 × 250 mm | Approximately 0.88 |
| 3500/42M-04-00 | Proximitor/Seismic Monitor | Shaft vibration and thrust position monitoring | Approximately 241 × 24 × 250 mm | Approximately 0.90 |
| 3500/50M-01-00 | Tachometer Module | Rotational speed and overspeed monitoring | Approximately 241 × 24 × 250 mm | Approximately 0.85 |
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 3500/92-01-01-00 | Communication Gateway Module | Ethernet communication and system integration | Approximately 241 × 24 × 250 mm | Approximately 0.82 |
| 3500/53-03-00 | Electronic Overspeed Detection Module | Independent overspeed protection | Approximately 241 × 24 × 250 mm | Approximately 0.87 |
| 3500/60-01-00 | Temperature Monitor | Multi-channel RTD and thermocouple inputs | Approximately 241 × 24 × 250 mm | Approximately 0.90 |
| 3500/45-01-00 | Position Monitor | Differential expansion and valve position monitoring | Approximately 241 × 24 × 250 mm | Approximately 0.89 |
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor System | High-resolution shaft displacement measurement | Probe dependent | Approximately 0.45 |
The Bently Nevada 3500/25-02-01-CN is a high-precision Keyphasor® Module developed for the 3500 Machinery Protection System, providing reliable shaft reference signals for advanced machinery monitoring and protection. By synchronizing rotational timing information across multiple monitoring modules, it enables highly accurate vibration analysis, shaft phase measurement, speed calculation, vector analysis, and predictive maintenance.
Its dual-channel architecture, advanced digital signal processing, excellent electromagnetic compatibility, compact rack-mounted design, and seamless integration with the 3500 platform make it well suited for demanding industrial applications. The module is widely used in power generation, oil and gas, petrochemical processing, mining, marine engineering, heavy manufacturing, and other industries where continuous machinery protection, operational reliability, and efficient maintenance are essential.