The Bently Nevada 149369-01 is the Enhanced Keyphasor Module for the 3500 series machinery protection system. It is a half-height, dual-channel module that provides Keyphasor signals to the monitor modules in a 3500 rack.
Item No :
149369-01Order(MOQ) :
1 PiecePayment :
EXW/CIFProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 149369-01 |
| Product Family | 3500 Machinery Protection System |
| Product Type | Enhanced Keyphasor Module (Main Card) |
| Module Type | Half-height, dual-channel |
| Input Source | Proximity probes or magnetic pickups |
| Input Signal Range | -0.8V to -21.0V (non-isolated I/O); +5V to -11V (isolated I/O) |
| Output | Digital Keyphasor signals |
| System Capacity | Up to 4 Keyphasor signals (normal); up to 8 (paired configuration) |
| TMR Support | Yes — requires two Keyphasor modules operating in parallel |
| Compatibility | Fully backward compatible with 3500 systems |
| Replaces | PWA 125792-01 (completely superseded) |
| Power Consumption | 3.2 W typical |
| Input Impedance | 21.8 kΩ minimum |
| Operating Temperature | -30°C to +65°C (-22°F to +150°F) |
| Origin | USA |
| Lifecycle Status | Active / Available as New Surplus |
| Model | Description | Typical Application |
|---|---|---|
| 149369-01 (this model) | Enhanced Keyphasor Module (main card) | Provides Keyphasor signals to 3500 rack modules |
| 125800-01 | Keyphasor I/O Module (Internal Terminations) | Companion I/O for internal wiring configurations |
| 126648-01 | Keyphasor I/O Module (External Terminations) | Companion I/O for external wiring configurations |
| 125800-02 | Isolated Keyphasor I/O Module (Internal Terminations) | Designed for magnetic pickup applications requiring isolation |
| 135473-01 | Keyphasor I/O Module (Internal Barriers + Internal Terminations) | Applications requiring internal barriers |
| 125792-01 | Legacy Keyphasor Module (PWA) | Superseded by 149369-01 |
Q1: What is the primary function of the 149369-01?
It is an Enhanced Keyphasor Module that provides a precise, once-per-turn (or multiple-event-per-turn) timing reference signal to the 3500 rack. It receives inputs from proximity probes or magnetic pickups and converts them into digital Keyphasor signals. These signals enable the 3500 system and external diagnostic tools to measure shaft rotative speed, 1X vibration amplitude, and phase .
Q2: What is the difference between 149369-01 and the older 125792-01?
The 149369-01 is the Enhanced Keyphasor Module that completely replaces the older PWA 125792-01. The enhanced version offers expanded Keyphasor signal processing capabilities while maintaining complete downward compatibility in form, fit, and function with existing Keyphasor modules for legacy systems .
Q3: How many Keyphasor modules are needed for TMR applications?
For Triple Modular Redundant (TMR) applications, the 3500 system should use two Keyphasor modules. In this configuration, the modules work in parallel to provide both a primary and secondary Keyphasor signal to the other modules in the rack .
Q4: What I/O modules are compatible with the 149369-01?
The 149369-01 main card requires a companion Keyphasor I/O Module for field wiring. Options include:
125800-01: Internal terminations (non-isolated)
126648-01: External terminations (non-isolated)
125800-02: Isolated, internal terminations (for magnetic pickups)
126648-02: Isolated, external terminations (for magnetic pickups)
135473-01: Internal barriers + internal terminations
Q5: What is the maximum number of Keyphasor signals the system can accept?
The 3500 Machinery Protection System can accept up to four Keyphasor signals in a normal configuration and up to eight Keyphasor signals in a paired configuration . A paired configuration requires two consecutive monitoring positions (upper/lower or two half-slot positions).
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