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Phone: +86 16626708626Description
3. Key Technical Specifications
- Channels: 4 vibration channels
- I/O Module: Aero GT I/O with internal terminations
- Sensor Support: Velomitor sensors and accelerometers via interface modules
- Filtering: 1X tracking and band-pass vibration per channel pair
- Keyphasor Support: Up to 4 inputs for tracking filters
- Outputs: Alarm relays, 4-20 mA recorder outputs (via I/O)
- Agency Approval: None (standard configuration)
- Operating Temperature: -30°C to +65°C (typical for 3500 series)
- Power Consumption: Monitor module typical values apply
- Compatibility: 3500 rack-based systems
4. Product Introduction
The Bently Nevada 3500-44-01-00 is the 3500/44 Aeroderivative Gas Turbine Vibration Monitor. It provides four-channel vibration monitoring optimized for aeroderivative gas turbines using Velomitor and accelerometer inputs.
This module applies tracking filters based on Keyphasor signals and supports 1X and band-pass measurements critical for GT applications. It meets requirements from major OEMs like Rolls-Royce and others. Use it in 3500 racks for reliable protection of high-speed turbine equipment. Always cross-check the specific I/O configuration and firmware with the installed system before installation.
- 3500-44-01-00
- 3500-44-01-00
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No channel readings | Sensor or I/O wiring | ✅ High | Check Velomitor/accelerometer signals at terminals | Verify connections and interface module |
| Tracking filter failure | Keyphasor signal loss | ✅ High | Monitor Keyphasor status in rack software | Confirm tach signal quality and wiring |
| Alarm not tripping | Setpoint or mode mismatch | ✅ Medium | Compare current values to configured alarms | Review configuration for correct mode |
| Erratic vibration data | EMI or grounding issue | ✅ Medium | Inspect shielding and ground connections | Ensure proper single-point grounding |
| Module not recognized | Firmware or slot issue | ✅ Low | Check rack configuration software | Verify module firmware matches rack |
Provide diagnostic logs, channel waveforms, and rack configuration details when contacting support.
6. Frequently Asked Questions (FAQ)
What sensors work with the 3500-44-01-00? It interfaces with Velomitor sensors and accelerometers through Bently Nevada interface modules. Configuration software sets the exact channel type.
Is this monitor hot-swappable in the 3500 rack? Yes, 3500 monitors support hot-swap in most configurations. Follow standard procedures to minimize risk during replacement.
What makes this suitable for aeroderivative gas turbines? It includes specialized filtering for 1X tracking and band-pass vibration plus support for multiple Keyphasor inputs tailored to GT operating speeds.
Do I need external termination blocks? No. This -01 option uses the Aero GT I/O module with internal terminations.
How many Keyphasors can it use? Each channel pair can apply its own tracking filter using up to four different Keyphasor signals from the rack.
Is this module still current production? It is part of the established 3500 platform. New surplus provides immediate availability for maintenance and expansion needs.
What warranty applies? 1-year warranty on functionality. Units undergo inspection and power-on verification. Full test reports available upon request.
