Advanced Rotational Reference for Critical Machinery Monitoring

The Bently Nevada 3500/25-01-03-01 Enhanced Keyphasor Module is a precision-engineered monitoring module designed to provide highly accurate shaft speed and phase reference signals for the Bently Nevada 3500 Machinery Protection System. This enhanced two-channel module receives signals from proximity probes or magnetic pickups and converts them into digital Keyphasor outputs, enabling synchronized vibration analysis, speed measurement, and machinery diagnostics across the entire monitoring system.

The 3500/25-01-03-01 configuration includes a single half-height two-channel module, an Internal Barrier I/O Module with Internal Terminations, and cNRTLus (Class I, Division 2) approval, making it suitable for installations that require enhanced electrical protection in hazardous industrial environments. Its proven reliability, backward compatibility, and flexible configuration make it an ideal solution for protecting high-value rotating assets.

Technical Specifications

Technical FAQs

1. What is the primary purpose of the 3500/25-01-03-01 Enhanced Keyphasor Module?

It generates precise digital Keyphasor signals from proximity probe or magnetic pickup inputs, providing shaft speed and phase reference information for vibration monitoring and machinery protection.

2. How many monitoring channels are included?

The module provides two independent input channels, allowing accurate monitoring of rotating equipment.

3. What does the "01-03-01" configuration mean?

It specifies a single half-height two-channel module, an Internal Barrier I/O Module with Internal Terminations, and cNRTLus (Class I, Division 2) certification.

4. Which sensors are supported?

The module accepts signals from Bently Nevada proximity probes and compatible magnetic pickup sensors, depending on the application requirements.

5. Is the module compatible with previous 3500 Keyphasor versions?

Yes. It is fully backward compatible in form, fit, and function, making it an ideal replacement for earlier Keyphasor modules.

6. Does the module support firmware updates?

Yes. Field-upgradable firmware enables future enhancements and simplifies long-term maintenance.

7. Why choose the Internal Barrier I/O option?

The Internal Barrier I/O configuration is designed for applications requiring additional protection in hazardous locations while maintaining reliable signal integrity.

8. What are the physical dimensions and weight?

The module measures 119.9 × 24.4 × 256.5 mm and weighs approximately 0.34 kg, allowing convenient installation in a standard half-height 3500 rack slot.

9. What is the role of a Keyphasor signal?

A Keyphasor signal provides a precise rotational timing reference used for speed calculation, phase measurement, synchronous vibration analysis, and advanced machinery diagnostics.

10. Why choose the Bently Nevada 3500/25-01-03-01 Enhanced Keyphasor Module?

Its advanced signal processing, certified hazardous-area configuration, dependable performance, and seamless integration with the 3500 Machinery Protection System make it an excellent choice for protecting mission-critical rotating equipment.