The Bently Nevada 330708-00-20-50-02-00 is part of the 3300 XL series of 11 mm proximity probes, designed for non-contact measurement of shaft vibration and position in heavy industrial equipment. It offers an extended linear range and robust construction, making it suitable for critical monitoring of large rotating machinery such as steam turbines and compressors in harsh environments.

This proximity probe is engineered to work with 3300 XL extension cables and Proximitor® sensors, providing high-resolution vibration and position data for predictive maintenance systems.

Key Features

• 11 mm tip for larger shaft diameters and extended range

• High sensitivity and accurate non-contact displacement measurement

• Threaded stainless steel housing for reliable installation

• IP67 environmental protection for harsh industrial environments

• Compatible with 3300 XL extension cables and Proximitor sensors

• Designed for long-term field deployment

Technical Specifications

Industry Applications

• Steam and Gas Turbines

• Compressors and Blowers

• Generators and Alternators

• Heavy-Duty Industrial Pumps

• Petrochemical Processing Equipment

• Machinery Vibration Monitoring Systems

Advantages

• Extended system length allows flexibility in probe placement

• High reliability and rugged design for demanding environments

• Stable signal output across broad temperature ranges

• Non-intrusive sensing ensures safe and accurate monitoring

• Backed by Bently Nevada’s global support and quality standards

• Easy integration with existing 3300 XL systems

Frequently Asked Questions (FAQ)

1. What is the total system length of this probe configuration?

   The combined length is 20 ft (probe) + 50 ft (extension cable) + 2 ft (system cable), totaling 72 ft.

2. Is this compatible with older Proximitor sensors?

   It is designed to work specifically with the 3300 XL Proximitor® sensors.

3. Can it be used in outdoor environments?

   Yes, its IP67 rating makes it suitable for outdoor and harsh environments.

4. What is the benefit of the 11 mm tip size?

   The larger tip is ideal for extended linear range and monitoring large shaft diameters.

5. Does this probe require recalibration?

   It comes factory calibrated; periodic recalibration depends on usage conditions.

6. Can this be mounted flush in a machine housing?

   Yes, it uses standard threaded mounting for easy installation.

7. Is it affected by electromagnetic interference?

   It features shielding for protection against EMI and RFI.

8. What cable materials are used?

   The extension cable is typically jacketed for durability and signal integrity.

9. Is this probe intrinsically safe?

   It may be used in hazardous areas with appropriate IS barriers and certifications.

10. Can the probe be reused after removal?

    Yes, if undamaged and within calibration, it can be reinstalled.