The Bently Nevada 330703-000-070-10-02 3300 XL 11 mm Proximity Probe is a premium non-contact displacement sensor designed for accurate and continuous monitoring of shaft vibration, rotor position, and dynamic movement in critical rotating machinery. Belonging to the industry-leading 3300 XL series, this probe ensures exceptional performance in demanding environments such as power generation plants, petrochemical facilities, and heavy industrial machinery. Its rugged stainless-steel body and advanced ceramic sensing tip provide reliable long-term operation while maintaining high signal integrity for predictive maintenance and machine protection systems.

Product Specifications

Applications

• Turbomachinery Monitoring – Measures radial or axial shaft vibration and displacement for turbines and compressors.

• Power Generation – Ensures continuous generator shaft monitoring to prevent unexpected downtime.

• Petrochemical Processing – Provides reliable data for compressors, pumps, and critical refinery equipment.

• Industrial Motors & Pumps – Detects misalignment, imbalance, and bearing wear to support predictive maintenance.

• Heavy Rotating Equipment – Supports troubleshooting of rotor bow, shaft whip, and dynamic movement.

• Retrofit and System Upgrades – Fully compatible with existing 3300 XL infrastructure for easy integration.

Advantages

• High Accuracy and Stability – Maintains ±1 % linearity across the entire measurement range.

• Rugged Industrial Design – Stainless-steel housing and ceramic tip withstand corrosive or abrasive environments.

• Superior EMI Protection – Multi-layer shielding minimizes electromagnetic interference in noisy industrial areas.

• Predictive Maintenance Ready – Enables early detection of vibration issues to reduce unplanned downtime.

• Seamless Integration – Pre-calibrated for direct connection to 3300 XL Proximitor® sensors.

• Wide Temperature Tolerance – Operates reliably from –40 °C to +120 °C for diverse installations.

Frequently Asked Questions (FAQ)

1. What sensing principle does this probe use?

   Eddy-current technology is employed to detect precise shaft-to-probe distance.

2. Is it directly compatible with all 3300 XL Proximitor® sensors?

   Yes, it is factory-calibrated to operate seamlessly with any 3300 XL Proximitor®.

3. What is the nominal output sensitivity?

   The probe provides approximately 5 mV/µm of shaft movement.

4. How is electromagnetic interference minimized?

   The probe features multi-layer shielding and precision connectors for optimal signal integrity.

5. Can it be used for both radial and axial displacement monitoring?

   Yes, orientation of installation determines whether radial or axial motion is measured.

6. Does the probe require on-site calibration after installation?

   No, it is pre-calibrated; only routine system checks are recommended.

7. What type of target surface ensures best accuracy?

   Conductive ferromagnetic materials such as steel are recommended for optimal readings.

8. Is the probe suitable for continuous 24/7 operation?

   Yes, it is engineered for permanent installation and continuous monitoring.

9. What frequency range can the probe accurately detect?

   The probe offers a flat response from DC up to 10 kHz.

10. How does it perform in high-vibration environments?

    It withstands up to 20 g vibration across 10–2000 Hz without loss of accuracy.