Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module

Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module

Availability: 7 left in stock

Description The Bently Nevada 3500/25 149369-01 is an Enhanced Keyphasor Module designed for the 3500 Machinery Protection System. This half-height,...

SKU: 149369-01

Manufacturer: Bently Nevada
Product No.: 149369-01
Product Type: Vibration Monitor Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Bently Nevada 3500/25 149369-01 is an Enhanced Keyphasor Module designed for the 3500 Machinery Protection System. This half-height, two-channel module provides essential Keyphasor signals to monitor modules within a 3500 rack. By receiving input signals from proximity probes or magnetic pickups, the module converts them into digital Keyphasor signals that indicate the precise moment a shaft mark coincides with the transducer. This updated module (149369-01) replaces the legacy PWA 125792-01, offering improved signal processing while maintaining full downward compatibility in form, fit, and function.

Features

Half-height module design for efficient rack space utilization.
Two independent input channels.
Supports inputs from proximity probes or magnetic pickups.
Generates once-per-turn event signals from multi-event-per-turn inputs.
Supports field-upgradeable firmware and asset management data reporting.
Supports up to four Keyphasor signals in normal configuration and up to eight in paired configurations.
Compatible with Triple Modular Redundant (TMR) applications using parallel module operation.

Applications

Steam and Gas Turbines: Monitoring speed, phase, thermal growth, and unbalance.
Aeroderivative Gas Turbines: Casing and high-speed core shaft vibration monitoring.
Hydroelectric Turbines: Rotor speed and air gap monitoring.
Centrifugal Compressors: Speed variation detection and automated shutdown for bearing failure.
Reciprocating Compressors: Rod position, pressure, and impulse monitoring for wear detection.
Critical Pumps: Reverse rotation and zero-speed detection.

Technical Specifications

Model	3500/25 149369-01
Input Impedance	21.8 kOhm minimum
Power Consumption	3.2 Watts typical
Operating Temperature	-30 degC to +65 degC
Storage Temperature	-40 degC to +85 degC
Humidity	95%, non-condensing
Rack Space	1 half-height front slot

Installation Guidelines

Ensure the 3500 rack power is disconnected before inserting or removing the module.
The module occupies one half-height front slot; ensure the corresponding I/O module is installed in the rear slot.
Field wiring for proximity probes or magnetic pickups connects to the rear I/O module terminal blocks.
For External Terminations (ET), use only approved Bently Nevada cables to connect the I/O module to the ET block.
Use isolated I/O modules when signals are shared between multiple devices to prevent electrical interference.
Maintain proper ESD precautions during handling to protect sensitive internal circuitry.

FAQ

What is the primary function of the 3500/25?
It detects the Keyphasor mark on a rotating shaft to provide precise timing signals required for measuring shaft speed, 1X vibration amplitude, and phase.

Can this module be used in TMR configurations?
Yes, the 3500/25 supports TMR applications by using two modules in parallel to provide primary and secondary signals to the rack.

Does this module replace older versions?
Yes, the 149369-01 is the updated version that completely replaces the legacy PWA 125792-01 module.

What's clients say about us

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Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.