The Bently Nevada 3500/25-01-01-00 is an Enhanced Keyphasor Module for the 3500 series machinery protection system, supplied as a complete set with two key components: the 149369-01 Enhanced Keyphasor Module (main card) and the 125800-01 Keyphasor I/O Module with internal terminations.
Item No :
3500/25-01-01-00Order(MOQ) :
1 PiecePayment :
EXW/CIFProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 3500/25-01-01-00 |
| Product Type | Enhanced Keyphasor Module (Main Card + I/O) |
| Main Card Part Number | 149369-01 |
| I/O Module Part Number | 125800-01 (Internal Terminations) |
| Module Type | Half-height, 2-channel |
| Input Source | Proximity probes or magnetic pickups |
| Input Signal Range (Non-Isolated) | +0.8V to -21.0V |
| Input Signal Range (Isolated) | +5V to -11V |
| Speed/Frequency Input Range | 1 to 1,200,000 cpm (0.017 to 20 kHz) |
| Output Range | 1 to 99,999 cpm (0.017 to 1,667 Hz) |
| Buffered Outputs | 2 front coaxial + 2 rear Euro Style |
| Output Impedance | 504Ω maximum |
| Transducer Power Supply | -24 VDC, 40 mA max per channel |
| Power Consumption | 3.2 W typical |
| TMR Support | Yes — requires two Keyphasor modules in parallel |
| System Capacity | Up to 4 Keyphasor signals (normal); up to 8 (paired) |
| Operating Temperature | -30°C to +65°C (varies with I/O module type) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 95%, non-condensing |
| Main Module Dimensions | 119.9 mm x 24.4 mm x 256.5 mm |
| Main Module Weight | 0.34 kg (0.76 lbs.) |
| I/O Module Dimensions | 241.3 mm x 24.4 mm x 103.1 mm |
| I/O Module Weight | 0.46 kg (1.01 lbs.) |
| Country of Origin | USA |
| Lifecycle Status | Active / Available as New Surplus |
| Model | Description | Typical Application |
|---|---|---|
| 3500/25-01-01-00 (this model) | Enhanced Keyphasor Module with internal terminations | Standard Keyphasor signal generation |
| 3500/25-01-02-00 | Enhanced Keyphasor Module with external terminations | Applications requiring external wiring access |
| 3500/25-01-03-01 | Enhanced Keyphasor Module with internal barriers + internal terminations | Hazardous area applications (CSA certified) |
| 3500/25-02-02-02 | Enhanced Keyphasor Module with external terminations (TMR variant) | Triple Modular Redundant configurations |
| 149369-01 | Enhanced Keyphasor Module (main card) | Spare/replacement main card |
| 125800-01 | Keyphasor I/O Module with Internal Terminations | Spare I/O module for internal wiring |
| 126648-01 | Keyphasor I/O Module with External Terminations | Spare I/O module for external wiring |
| 125792-01 | Legacy Keyphasor Module (PWA) | Superseded by 149369-01 |
Q1: What is the primary function of the 3500/25-01-01-00?
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 is the difference between the 125800-01 and 126648-01 I/O modules?
The 125800-01 provides internal terminations for field wiring inside the rack. The 126648-01 provides external terminations for applications requiring wiring access outside the rack. Both are compatible with the 149369-01 main card and support non-isolated proximity probe or magnetic pickup inputs.
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).
The Bently Nevada 3500/60-01-00 is a 6-Channel Temperature Monitor for the 3500 Machinery Protection System. The complete configuration consists of the 163179-01 Temperature Monitor (main card) and the 133819-01 RTD/TC I/O Module with internal terminations.
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System, configured with the 286566-01 Overspeed Detection main card and the 133396-01 Overspeed Detection I/O Module.
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System. The 3500/53M is the split-base M-series version, using the 286566-01 main card with the 133396-01 rear I/O module. It is not drop-in compatible with the legacy 3500/53 (133388-01).
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System. The 3500/53M is the split-base M-series version, using the 286566-01 main card with the 133396-01 rear I/O module. It is not drop-in compatible with the legacy 3500/53 (133388-01).
The Bently Nevada 3500/53-03-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System, configured with the 133388-01 Overspeed Detection main card and the 133396-01 Overspeed Detection I/O Module.
he Bently Nevada 288062-02 is the Tachometer Module main card for the 3500/50M Tachometer Module in the 3500 Machinery Protection System. It is a dual-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotational speed, rotor acceleration, and rotor direction.
The Bently Nevada 3500/50M-01-00 is a 2-Channel Tachometer Module for the 3500 Machinery Protection System, configured with the 288062-02 Tachometer main card and the 133442-01 I/O Module with internal terminations. The "M" designation indicates M-series functionality, providing enhanced integration with System 1 diagnostic software.
The Bently Nevada 133442-01 is a dual-channel Tachometer I/O Module with Internal Terminations, designed for the 3500/50 Tachometer Module in the 3500 Machinery Protection System. The module conditions raw pulse signals to determine shaft rotational speed, rotor acceleration, and rotor direction, and can supply conditioned Keyphasor signals to the rack backplane for use by other monitoring modules.
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