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Bently Nevada 3500/25-01-01-01 Enhanced Keyphasor Module | 149369-01 + 125800-01

Name: Bently Nevada 3500/25-01-01-01 Enhanced Keyphasor Module | 149369-01
Brand: Bently Nevada
SKU: 3500/25-01-01-01
Price: 1318.00 CNY
Availability: InStock

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SKU: 3500/25-01-01-01 TSI & Rotating Machinery Monitoring Bently Nevada

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Genuine Bently Nevada 3500/25-01-01-01 Hardware Component - Factory Sealed

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SKU3500/25-01-01-01
CategoryTSI & Rotating Machinery Monitoring
BrandBently Nevada
SupportAvailability, lead time, condition, and shipping coordination

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3300 System 3500 Series Proximity Probes

Bently Nevada 3500/25 Enhanced Keyphasor Module – Precision Phase Reference for Critical Machinery

The Bently Nevada 3500/25-01-01-01 Enhanced Keyphasor Module (P/N: 149369-01 + 125800-01) delivers reliable phase reference signals essential for accurate vibration analysis and machinery diagnostics in rotating equipment applications. Engineered for seamless integration within 3500 rack-based monitoring systems, this module processes Keyphasor signals to provide precise once-per-revolution timing data critical for balancing, phase lag analysis, and transient event capture.

Technical Specifications

Input Channels: Single Keyphasor input with enhanced signal conditioning
Signal Compatibility: Proximity probe, magnetic pickup, optical sensor, or contact closure
Input Voltage Range: -24 Vdc to +24 Vdc peak
Frequency Response: 10 Hz to 100 kHz
Output Distribution: Buffered Keyphasor signals to multiple monitor modules
Rack Compatibility: 3500 Series monitoring racks (full-height module)
Operating Temperature: -30 °C to +65 °C (-22 °F to +149 °F)
Compliance: API 670, ISO 20816, CE marked
Power Consumption: Typical 4.5W from rack backplane

Key Applications

Steam & Gas Turbines: Provides phase-locked reference for blade pass frequency analysis, startup/shutdown transient monitoring, and critical speed identification in power generation turbines.

Compressors & Pumps: Enables precise vector filtering for unbalance detection, misalignment diagnosis, and bearing fault isolation in centrifugal and reciprocating machinery.

Motors & Generators: Supports synchronous averaging, order tracking, and torsional vibration analysis for large rotating electrical machines in industrial and marine applications.

Enhanced Features & Solutions

The enhanced design incorporates advanced noise immunity circuitry to maintain signal integrity in electrically harsh environments. Automatic gain control adapts to varying probe gap voltages, ensuring consistent triggering across different sensor types. Built-in diagnostics continuously monitor signal quality, providing early warning of sensor degradation or wiring faults before they impact measurement accuracy.

Integration Advantage: Distributes conditioned Keyphasor signals to up to 20 monitor modules simultaneously, eliminating the need for external signal splitters and reducing installation complexity. Hot-swappable design allows module replacement without system shutdown, minimizing maintenance downtime.

Common Technical Questions

Q: Can this module accept signals from both proximity probes and magnetic pickups?
A: Yes, the 3500/25 Enhanced Keyphasor Module features universal input conditioning that automatically adapts to proximity probe (-24V to -1V), magnetic pickup (AC coupled), optical sensor (TTL/CMOS), or contact closure inputs without manual configuration.

Q: How does this module differ from the standard 3500/25?
A: The Enhanced version (149369-01) includes improved EMI/RFI filtering, extended temperature range operation, enhanced diagnostics with signal quality metrics, and backward compatibility with legacy 3300 system Keyphasor sensors.

Q: What happens if the Keyphasor signal is lost during operation?
A: The module immediately triggers a “Keyphasor Not OK” alarm condition, transmitted to all connected monitors. Vibration monitors automatically switch to overall vibration measurement mode, maintaining machinery protection while alerting operators to the sensor fault.

Q: Is field calibration required after installation?
A: No, the module ships factory-calibrated with NIST-traceable certification. The auto-ranging input circuitry eliminates field adjustments. Only physical installation and wiring verification are required per API 670 guidelines.

Quality Assurance & Warranty

Every unit undergoes rigorous factory acceptance testing including signal integrity verification, temperature cycling, and electromagnetic compatibility validation. Supplied with calibration certificate and full technical documentation. Backed by a comprehensive 12-month warranty covering materials, workmanship, and performance to published specifications.

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