Description
Core Product Basics
- Manufacturer: Bently Nevada (U.S.)
- Part Number: 149369-01
- Product Type: Enhanced Keyphasor Module
- Series: 3500 Machinery Protection System
- Form Factor: Half-height, 2 independent channels
- Warranty: 12 months, brand new in original packaging
- Compliance: Fully meets API 670 Keyphasor functional standards

149369-01
Key Technical Specifications
- Power Consumption: 3.2 Watts
- Minimum Input Impedance: 21.8 k Ohm
- Operating Temperature Range: -30°C to +65°C (-22°F to +150°F)
- Net Weight: 0.3 kg
- Input Compatibility: Supports magnetic pickups and proximity probes for shaft keyway alignment detection
Core Functional Features
- Converts raw shaft keyway alignment signals from transducers into standardized digital Keyphasor signals
- Delivers precise rotational reference signals for accurate phase angle and rotational speed measurement
- Seamlessly integrates with other 3500 series monitor modules within the same rack
- Designed for high-speed, high-reliability industrial environments with strong anti-interference performance
Typical Application Scenarios
- Precision phase and speed measurement for steam turbines, centrifugal compressors and large industrial motors
- Machinery fault diagnosis and dynamic balancing workflows in petrochemical, power generation and metallurgy industries
- Synchronous sampling trigger for transient data acquisition in rotating machinery condition monitoring systems
- Reference signal source for vibration phase analysis in critical asset protection loops
Common Technical Pitfalls to Avoid
- Do not confuse this module with the 3500 series front touchscreen display unit, as the 149369-01 is a dedicated signal processing module, not a HMI device
- Never exceed the operating temperature range, as this will cause signal distortion and loss of phase reference accuracy
- Verify part number compatibility before installation, as mismatched 3500/25 variants may fail to communicate with the rack backplane
- Ensure input transducer wiring is properly shielded to prevent electromagnetic interference that corrupts Keyphasor signal integrity

149369-01
Related Product Recommendations
- 3500/40M Proximitor Monitor Module: Matches with this Keyphasor module to deliver full-spectrum radial vibration and axial displacement measurement
- 3500/92 Communication Gateway: Transmits Keyphasor and machinery health data to external DCS/SCADA systems
- 3500/22M Transient Data Interface Module: Captures high-resolution dynamic waveform data triggered by the Keyphasor reference signal




