Product Overview

The Bently Nevada 330850-90-05 is a 3300 XL 25 mm Proximitor Sensor designed for high-accuracy non-contact measurement of vibration and shaft displacement in rotating machinery. It is part of the Bently Nevada 3300 XL monitoring system, widely used in industrial condition monitoring and machinery protection applications.

This sensor is engineered for long-term reliability in harsh industrial environments, delivering stable and precise signal conversion for critical rotating equipment such as turbines, compressors, pumps, and generators.

Technical Specifications

What Is This Product

The 330850-90-05 Proximitor Sensor is an electronic signal conditioning module used in the Bently Nevada 3300 XL system. It works together with a proximity probe and extension cable to measure the distance between the probe tip and a rotating shaft without physical contact.

It converts raw eddy-current signals into stable electrical outputs that can be used by monitoring and protection systems.

Function and Working Principle

The sensor operates based on eddy current measurement technology. When a probe is placed near a conductive rotating shaft, an electromagnetic field is generated. Changes in the gap between the probe and the shaft alter the eddy current response.

The Proximitor Sensor processes these changes and converts them into a proportional electrical signal representing:

• Shaft vibration
• Axial position
• Radial displacement
• Machine dynamic movement

This allows continuous and accurate monitoring of rotating machinery without physical contact.

Role in Industrial Systems

The 330850-90-05 plays a critical role in machinery protection systems by acting as the signal interface between the probe and the monitoring system.

Its main functions include:

• Converting probe signals into usable output data
• Supporting real-time vibration monitoring
• Enabling early detection of mechanical faults
• Providing input for alarm and shutdown systems
• Supporting predictive maintenance strategies

Industrial Applications

This sensor is widely used in industries where rotating equipment reliability is essential:

• Power generation plants
• Oil and gas facilities
• Petrochemical processing plants
• Industrial compressor systems
• Pumping and hydraulic systems
• Marine propulsion and engine systems

It is especially suitable for continuous monitoring of high-value rotating machinery.

Compatible Components

The 330850-90-05 is typically used with:

• 3300 XL 25 mm proximity probes
• Extension cables (matched system length)
• Bently Nevada 3300 XL monitoring modules
• Machine protection systems
• Signal processing and data acquisition units
• Industrial mounting hardware

All components must be matched as a complete system to ensure accurate measurement performance.

Recommended Alternative Models

Key Advantages

• High-precision non-contact measurement
• Stable performance in harsh environments
• Fully compatible with 3300 XL systems
• Long cable design for flexible installation
• Supports continuous monitoring applications
• Reliable signal conditioning performance

Technical FAQs

What is the main function of this sensor?
It converts proximity probe signals into usable vibration and displacement output.

Is it part of a complete system?
Yes, it works together with probes, cables, and monitoring modules in the 3300 XL system.

What equipment is it used for?
It is used on turbines, compressors, pumps, and other rotating machinery.

Is it suitable for continuous operation?
Yes, it is designed for long-term industrial monitoring.

Conclusion

The Bently Nevada 330850-90-05 3300 XL 25 mm Proximitor Sensor is a critical component in industrial vibration monitoring systems. It provides accurate signal conditioning for non-contact measurement of rotating machinery, supporting reliable operation, predictive maintenance, and machinery protection across demanding industrial environments.