High-Accuracy Rotational Reference for Advanced Machinery Diagnostics
The Bently Nevada 3500/25-01-01-00 Enhanced Keyphasor Module is a precision-engineered two-channel module designed to provide reliable shaft speed and phase reference signals for the Bently Nevada 3500 Machinery Protection System. By receiving input from proximity probes or magnetic pickup sensors, it generates highly accurate digital Keyphasor signals that synchronize vibration analysis, speed monitoring, and phase measurements across the entire protection system.
Configured with 01-01-00, this version includes a single half-height 2-channel module, an internal termination I/O module (125800-01), and no agency approval option, making it an ideal solution for standard industrial machinery monitoring applications. Its enhanced signal processing capabilities and backward compatibility with previous 3500 Keyphasor modules ensure seamless integration into both new and existing installations.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/25-01-01-00 |
| Product Type | Enhanced Keyphasor Module |
| Series | 3500 Machinery Protection System |
| Module Configuration | 01-01-00 |
| Number of Channels | 2 Independent Channels |
| Module Size | Half-Height Module |
| I/O Module | Internal Terminations (125800-01) |
| Input Types | Proximity Probes or Magnetic Pickup Sensors |
| Primary Function | Shaft Speed & Phase Reference |
| Buffered Outputs | Front and Rear Buffered Outputs |
| Firmware | Field Upgradeable |
| Installation | 3500 Rack Half-Height Slot |
| Main Module Dimensions | 119.9 × 24.4 × 256.5 mm |
| Main Module Weight | Approximately 0.34 kg |
Typical Applications
The 3500/25-01-01-00 Enhanced Keyphasor Module is widely used wherever precise rotational timing information is required for machinery protection and condition monitoring.
Typical applications include:
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Steam turbine monitoring
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Gas turbine protection systems
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Centrifugal compressor diagnostics
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Industrial pumps and fans
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Large electric motors
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Gearbox vibration analysis
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Power generation facilities
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Oil and gas production platforms
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Petrochemical processing plants
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Mining and heavy industrial equipment
Key Benefits
Built to deliver dependable timing reference signals, the 3500/25-01-01-00 improves the accuracy of machinery diagnostics while enhancing the overall reliability of the 3500 monitoring platform.
Key advantages include:
High-precision two-channel Keyphasor monitoring
Generates accurate shaft speed and phase reference signals
Compatible with proximity probes and magnetic pickups
Enhanced digital signal processing for improved diagnostics
Internal termination design simplifies installation
Field-upgradable firmware for long-term flexibility
Full backward compatibility with earlier 3500 Keyphasor modules
Compact half-height design saves rack space
Reliable operation in demanding industrial environments
Supports predictive maintenance and asset reliability programs
Technical FAQs
1. What is the primary function of the 3500/25-01-01-00 module?
It converts signals from proximity probes or magnetic pickups into digital Keyphasor signals, providing accurate shaft speed and phase reference information for the 3500 Machinery Protection System.
2. How many channels does this module provide?
The module features two independent Keyphasor input channels, allowing precise monitoring of rotating equipment.
3. What does the "01-01-00" configuration represent?
It specifies a single half-height 2-channel Keyphasor module, an internal termination I/O module (125800-01), and no agency approval option.
4. Which sensors are compatible with this module?
The module accepts signals from Bently Nevada proximity probes and magnetic pickup sensors, depending on the application requirements.
5. Can this module be installed in existing 3500 systems?
Yes. The Enhanced Keyphasor Module is fully backward compatible with previous-generation 3500 Keyphasor modules, making upgrades straightforward.
6. Does the module support firmware updates?
Yes. The firmware is field upgradeable, allowing future enhancements and simplified maintenance without replacing the hardware.
7. Can the module be used in TMR applications?
Yes. For Triple Modular Redundant (TMR) systems, two Enhanced Keyphasor Modules operate together to provide primary and secondary Keyphasor signals.
8. What are the physical dimensions and weight?
The module measures 119.9 × 24.4 × 256.5 mm and weighs approximately 0.34 kg, making it suitable for installation in standard half-height slots within the 3500 rack.
9. Why is a Keyphasor signal important?
A Keyphasor signal provides an accurate rotational reference that enables precise speed measurement, phase analysis, synchronous vibration monitoring, and advanced machinery diagnostics.
10. Why choose the Bently Nevada 3500/25-01-01-00 Enhanced Keyphasor Module?
Its precise signal processing, dependable industrial performance, flexible sensor compatibility, and seamless integration with the 3500 Machinery Protection System make it an excellent solution for protecting critical rotating machinery while supporting predictive maintenance initiatives.
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