



Introduction
The Bently Nevada 3500/25 Enhanced Keyphasor Module (149369-01+135473-01) is a precision timing and phase-reference module engineered for the Bently Nevada 3500 Series machinery protection and condition monitoring platform. From a reliability engineering perspective, this module plays a critical role in transforming raw tachometer and proximity probe signals into stable Keyphasor references used for advanced vibration and rotor dynamic analysis.
Rather than acting as a primary measurement device, the module functions as a synchronization cornerstone within the monitoring system, enabling accurate phase correlation, speed tracking, and fault diagnostics for critical rotating assets.
Technical Specifications
| Item | Description |
|---|---|
| Manufacturer | Bently Nevada |
| Series | 3500 Series |
| Model | 3500/25 Enhanced Keyphasor Module |
| Order Number | 149369-01+135473-01 |
| Module Type | Enhanced Keyphasor Module |
| Functional Role | Rotor speed and phase reference generation |
| System Compatibility | Bently Nevada 3500 Monitoring Systems |
| Installation | Slot-mounted within 3500 rack |
| Signal Interface | Tachometer and probe inputs, Keyphasor outputs |
| Dimensions | 119.9 × 24.4 × 256.5 mm (H × W × D) |
| Weight | Approx. 0.34 kg |
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