

Component Description
The part number 3500/25-01-01-01 149369-01+125800-01 refers to a configuration of modules for the Bently Nevada 3500 Monitoring System, a highly reliable system used for protecting and monitoring critical machinery.
3500/25-01-01-01: This denotes a Keyphasor Module. The Keyphasor is a fundamental component that provides a once-per-turn timing signal from a rotating shaft. This signal is used as a phase reference for measuring vibration (amplitude and phase lag) and for synchronizing other measurement functions.
149369-01: This is likely a specific hardware revision or assembly number for the Keyphasor Module.
125800-01: This is a Transient Data Interface (TDI) Module. The TDI module captures and stores high-speed, time-synchronized waveform data from various monitoring modules during an alarm or trigger event. This data is crucial for machinery diagnostics and troubleshooting.
In summary, this part number represents a Keyphasor Module paired with a Transient Data Interface Module, forming a subsystem within a Bently Nevada 3500 rack dedicated to acquiring phase reference signals and capturing detailed transient machinery data.
Key Parameters
The following table outlines the key parameters for this module configuration. Note that the weight is an approximation for a single module.
| Parameter | Specification |
|---|---|
| System | Bently Nevada 3500 |
| Primary Function | Keyphasor Signal Input & Transient Data Capture |
| Keyphasor Inputs | Typically 2 independent channels |
| Keyphasor Signal Source | Proximity probe or magnetic pickup |
| TDI Function | Captures and time-synchronizes waveform data from multiple modules during events. |
| Communication | Integrates with the 3500 rack framework; TDI data accessible via diagnostic software. |
| Mounting | Slides into a dedicated slot in a 3500 rack. |
| Dimensions (H x W x D) | Approx. 193 mm x 55 mm x 200 mm (7.6 in x 2.16 in x 7.87 in) per module |
| Weight | Approx. 0.5 - 0.7 kg (1.1 - 1.5 lbs) per module |
Application Scenarios
This specific module configuration is applied in scenarios requiring precise phase measurement and detailed event analysis for the protection and diagnostic monitoring of heavy industrial rotating equipment.
Gas & Steam Turbines:
Provides the Keyphasor signal essential for measuring shaft vibration and rotor dynamics.
The TDI captures data during startup, shutdown, or trip events, helping engineers analyze unbalance, misalignment, or rubbing conditions.
Centrifugal Compressors:
Monitors the rotational speed and phase reference for surge detection and performance analysis.
Captures transient data during surge events or process upsets, which is critical for understanding the cause and preventing damage.
Large Pumps and Motors:
Used to monitor vibration and analyze torsional vibrations or other dynamic behaviors.
The TDI helps diagnose issues like cavitation in pumps or electrical faults in motors by capturing the exact waveform data at the moment of an alarm.
General Machinery Protection & Diagnostics:
Serves as the core timing module for an entire monitoring system rack, ensuring all vibration and position measurements are phase-synchronized.
Enables advanced diagnostic capabilities by providing a "black box" recorder function for machinery faults, allowing for root cause analysis and preventing future failures.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
Your trust is the driving force for our continuous progress, submit your requirements immediately to get exclusive quotes