Bently Nevada 3500/25 149369-01+126648-01 Enhanced Keyphasor Module

The Bently Nevada 3500/25 149369-01+126648-01 Enhanced Keyphasor Module is a high-precision module designed to generate accurate rotor position and speed signals for critical rotating machinery. It forms an essential part of the Bently Nevada 3500 Machinery Monitoring System, providing Keyphasor signals used as the phase reference for vibration analysis, machinery diagnostics, and protection systems.

This enhanced Keyphasor module features advanced signal conditioning to ensure reliable detection of rotor events such as imbalance, misalignment, and torsional vibration. Its improved signal processing provides deterministic outputs suitable for high-speed turbines, compressors, and generators. By delivering precise phase-referenced data, the module supports predictive maintenance programs, enables early fault detection, and enhances operational safety across industrial environments including power generation, petrochemical, and heavy manufacturing.

The 149369-01+126648-01 configuration offers extended input compatibility and optimized performance for complex monitoring systems where accurate rotor phase information is critical.

Product Parameters

Product Applications

• Turbomachinery Monitoring – Provides accurate rotor phase and speed signals for gas and steam turbines.

• Compressors – Enables precise vibration and phase monitoring to detect imbalance and misalignment early.

• Generators – Supplies phase reference signals for machinery protection and vibration analysis.

• Rotating Equipment Diagnostics – Supports detection of torsional vibration, misalignment, and rotor imbalance.

• Predictive Maintenance – Facilitates trend analysis and early fault detection to prevent unplanned downtime.

• Safety Instrumented Systems (SIS) – Integrates with the 3500 system to protect critical rotating machinery from overspeed and operational faults.

Product Advantages

• High Phase Accuracy – Provides precise rotor phase measurements for advanced diagnostics.

• Enhanced Signal Conditioning – Reduces noise and ensures reliable Keyphasor outputs.

• Seamless Integration – Fully compatible with Bently Nevada 3500/25 modules and the broader 3500 system.

• Predictive Maintenance Support – Enables early detection of mechanical issues using phase-referenced signals.

• Rugged Industrial Design – Operates reliably in high-vibration and EMI-prone environments.

• Standards Compliance – Meets IEC, API, and ISO standards for machinery monitoring and protection.

FAQ

1. What is the primary function of the 3500/25 149369-01+126648-01 module?

   It provides precise rotor speed and phase signals for machinery protection and vibration analysis.

2. How many input channels are supported?

   It supports 2 independent proximity probe or speed pickup inputs.

3. What is the typical phase accuracy?

   ±0.5 degrees.

4. Can this module handle high-speed turbines?

   Yes, it supports a frequency range up to 20 kHz suitable for high-speed machinery.

5. Is it compatible with other 3500 system modules?

   Yes, it integrates seamlessly with all Bently Nevada 3500 series modules.

6. Does it provide noise reduction?

   Yes, it uses advanced signal conditioning for EMI and noise rejection.

7. Can it support predictive maintenance programs?

   Yes, phase-referenced signals support trend analysis and early fault detection.

8. Are the output signals TTL-compatible?

   Yes, both Keyphasor pulse and phase reference outputs are TTL-compatible.

9. Is proper grounding required for optimal performance?

   Yes, grounding of the chassis and shielded cables is necessary for signal integrity.

10. Can it be used in safety-critical machinery systems?

    Yes, it works with the 3500 system to provide protection for critical rotating equipment.