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Bently Nevada 3500/25 125792-01 Enhanced Keyphasor Module

The Bently Nevada 3500/25 125792-01 is an Enhanced Keyphasor Module used within the 3500 Machinery Protection System.

The Keyphasor function provides a once-per-turn or multiple-event-per-turn reference pulse from a rotating shaft. This timing reference is essential for advanced vibration diagnostics because it allows monitoring systems to determine:

• Shaft rotational speed

• 1X vibration amplitude

• Vibration phase angle

• Rotor position reference

• Machine operating condition

The module accepts signals from:

• Eddy current proximity probes

• Magnetic pickup sensors

and converts these analog signals into digital Keyphasor outputs for use by monitoring modules installed in the same 3500 rack.

The 3500/25 Enhanced Keyphasor Module maintains compatibility with previous Keyphasor module designs and is commonly used for upgrading or replacing earlier 3500 system Keyphasor modules.

Bently Nevada 3500/25 125792-01

Manufacturer:
Bently Nevada

Series:
3500 Machinery Protection System

Part Number:
125792-01

Product Type:
Enhanced Keyphasor Module

Module Structure:
Half-height dual-channel module

Primary Function:
Shaft timing reference and speed measurement

Compatible Sensors:
Proximity probes and magnetic pickups

Enhanced Keyphasor Signal Processing

The 3500/25 provides improved signal processing capability compared with earlier Keyphasor modules, delivering reliable timing signals for machinery diagnostics.

Two-Channel Shaft Reference Monitoring

The module provides two independent Keyphasor channels, allowing multiple shaft reference signals to be processed within a 3500 rack configuration.

Proximity Probe and Magnetic Pickup Compatibility

The module supports different speed measurement sensor technologies, making it suitable for various rotating equipment applications.

Precise Phase Measurement

The Keyphasor reference signal enables accurate vibration phase analysis, which is important for rotor balancing, fault diagnosis, and machine performance evaluation.

3500 System Integration

The module communicates with other Bently Nevada 3500 monitoring modules through the rack backplane, providing synchronized shaft reference information.

• Provides accurate rotor timing reference signals

• Improves vibration analysis accuracy

• Supports precise shaft speed measurement

• Enables advanced machinery diagnostics

• Compatible with existing Bently Nevada 3500 systems

• Reduces troubleshooting time for rotating equipment issues

Steam Turbine Monitoring

Used for shaft speed, phase reference, and vibration analysis in turbine protection systems.

Gas Turbine Systems

Provides accurate rotor timing signals for high-speed rotating equipment.

Compressor Monitoring

Supports vibration diagnostics and condition monitoring.

Power Generation

Applied in turbine-generator machinery protection systems.

Oil & Gas Industry

Used for compressors, expanders, and critical rotating equipment.

Industrial Machinery

Suitable for motors, pumps, and large rotating assets requiring accurate phase reference data.

Q1: What is the Bently Nevada 3500/25 125792-01 used for?

A:
It is used to provide Keyphasor reference signals for shaft speed measurement, vibration phase analysis, and rotating machinery diagnostics.

Q2: How many channels does the 3500/25 125792-01 provide?

A:
The module provides two independent Keyphasor channels.

Q3: Which sensors are compatible with this module?

A:
It supports proximity probes and magnetic pickup sensors.

Q4: Is the 3500/25 a vibration monitoring module?

A:
No. The 3500/25 provides shaft reference timing signals used by vibration monitoring modules. It does not directly measure vibration.

Q5: Can the 125792-01 replace older Keyphasor modules?

A:
Yes. The Enhanced Keyphasor Module maintains compatibility with earlier 3500 Keyphasor module installations and is used for system upgrades.

Do you provide global shipping services?

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