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The 3500/25 149369-01 is an enhanced keyphase module manufactured by Bentley Nevada, a subsidiary of General Electric (GE). It is a core component of the 3500 monitoring system, a half-height dual-channel module specifically designed for condition monitoring of large rotating machinery.
System-wide Signal Sharing
Enhanced Signal Processing
High Flexibility and Scalability
The 3500/25 Enhanced Keyphasor Module is a half-height, two-channel module used to provide Keyphasor signals to the monitor modules in a 3500 rack. The module receives input signals from proximity probes or magnetic pickups and converts the signals to digital Keyphasor signals that indicate when the Keyphasor mark on the shaft coincides with the Keyphasor transducer. The 3500 Machinery Protection System can accept up to four Keyphasor signals for normal configuration and up to eight Keyphasor signals in a paired configuration. The Enhanced Keyphasor Module is an improved 3500 system module. It offers expanded Keyphasor signal processing capabilities over the previous design while maintaining complete downward-compatibility in terms of form, fit and function with existing Keyphasor modules for use in legacy systems. The Keyphasor module, PWA 125792-01, is completely replaced by the updated 149369-01 module.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Nuclear Power
Providing high-precision speed references for main feedwater pumps to ensure cooling system stability.
Steel & Metallurgy
Used for blast furnace blowers to analyze dynamic balance through Keyphasor signals.
Pulp & Paper
Monitoring dryer section drive systems to analyze the synchronization of multi-support shafting.
Air Separation
Monitoring air compressors to judge rotor thermal bow through 1X vector analysis.
Cement Production
Vibration analysis for large exhaust fans to reduce downtime caused by uneven dust accumulation.
Marine Propulsion
Monitoring main propulsion turbines to provide propeller shaft speed and phase data.
Ensure the module is perfectly matched with its corresponding I/O module (isolated or non-isolated) and that sensor types and trigger thresholds are correctly configured in the software to prevent signal false-triggering or loss. During installation or replacement, verify slot alignment to avoid damaging backplane pins by forcing the card. Additionally, regularly verify the logical distribution of Keyphasor signals to ensure all monitor modules in the rack receive synchronized and accurate speed and phase references.
It provides speed and phase references to monitor modules for calculating vibration phase and machine RPM.
Where can the 3500/25 149369-01 be installed in the rack?
It is installed in the dedicated Keyphasor slots on the left side of the 3500 rack.
How to correctly use the 3500/25 149369-01?
Insert it into the rack, connect it to the rear I/O module, and configure input signal types via the 3500 Configuration Software.
Which sensors are compatible with 3500/25 149369-01?
It supports proximity probes, magnetic pickups, and optical sensors.
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