Product Overview

The Bently Nevada 330130-075-03-RU is a 3300 XL standard extension cable used within the Bently Nevada 3300 XL proximity transducer system.

It provides the essential electrical link between the proximity probe and the Proximitor sensor, ensuring accurate transmission of vibration, displacement, and Keyphasor signals in rotating machinery monitoring applications.

This model supports a 7.5-meter cable length, making it suitable for medium-to-long routing distances in industrial installations such as turbines, compressors, pumps, and generators.

The “-RU” suffix indicates a specific configuration or regional ordering variant within the Bently Nevada product coding system.

Technical Specifications

Function and Working Principle

The extension cable does not perform measurement itself. Instead, it serves as a high-integrity analog signal transmission path within the 3300 XL measurement chain.

Signal Flow

1. Proximity probe detects shaft vibration using eddy-current sensing
2. Electrical analog signal is generated at the probe tip
3. Extension cable transmits the signal with minimal distortion
4. Proximitor sensor converts the signal into calibrated output

Vout→Proximitor conditioning stageV_{out} \rightarrow \text{Proximitor conditioning stage}Vout​→Proximitor conditioning stage

Key Functions

• Transmits high-frequency proximity probe signals
• Maintains signal integrity over 7.5-meter distance
• Supports shaft vibration and displacement measurement
• Enables Keyphasor phase reference signal transmission
• Compatible with API 670 machinery protection systems

System Role

The 3300 XL proximity measurement system consists of:

• Proximity probe (sensor head)
• Extension cable (this component)
• Proximitor sensor (signal conditioning module)

Together, they enable:

• Shaft vibration monitoring
• Radial displacement measurement
• Rotor dynamic analysis
• Machinery protection and shutdown logic inputs

Industrial Applications

• Steam turbines
• Gas turbines
• Compressors
• Pumps
• Generators
• Industrial fans
• Petrochemical rotating equipment
• Power generation systems

Installation Guidelines

• Use proper ClickLoc connector engagement (hand-tight only)
• Avoid sharp bends or mechanical stress on cable
• Keep away from high-voltage or high-noise electrical lines
• Ensure proper grounding and shielding practices
• Verify full system compatibility (probe + cable + Proximitor)
• Confirm correct system length configuration for calibration accuracy

Key Advantages

• Stable signal transmission over 7.5 meters
• Heavy-duty construction for industrial environments
• High resistance to electromagnetic interference (EMI)
• Fully compatible with Bently Nevada 3300 XL systems
• Supports long-term predictive maintenance and condition monitoring

Technical FAQs

Q1: Does this cable measure vibration?
No. It only transmits signals between the probe and the Proximitor sensor.

Q2: What does “RU” mean?
It indicates a specific regional or configuration variant in the Bently Nevada ordering system.

Q3: Can it be used alone?
No. It must be used as part of a complete probe–cable–Proximitor system.

Q4: Where is it used?
In turbines, compressors, pumps, generators, and other rotating machinery systems.

Conclusion

The Bently Nevada 330130-075-03-RU 3300 XL Standard Extension Cable is a rugged 7.5-meter interconnect component designed for industrial vibration monitoring systems. It ensures stable, low-noise signal transmission, supporting accurate machine protection and predictive maintenance in critical rotating equipment environments.