Bently Nevada 330703-000-040-90-01-CN 3300 XL 11 mm Proximity Probes

The Bently Nevada 330703-000-040-90-01-CN 3300 XL 11 mm Proximity Probe is an industrial-grade, non-contact displacement sensor engineered for continuous monitoring of shaft vibration and rotor position in critical rotating machinery. As part of the well-established 3300 XL series, it delivers exceptional accuracy and stability even in environments with high mechanical stress or electromagnetic interference. Its rugged stainless-steel housing and durable ceramic sensing tip ensure reliable performance in power generation plants, petrochemical facilities, and other heavy-duty industrial applications. The CN suffix designates a regional configuration while maintaining full compatibility with standard 3300 XL monitoring systems.

Product Specifications

Applications

• Turbomachinery Protection – Monitors turbine shafts for early detection of imbalance or misalignment.

• Generator and Motor Monitoring – Provides continuous vibration and displacement feedback for predictive maintenance.

• Petrochemical Operations – Suitable for pumps, compressors, and fans in refineries and chemical plants.

• Power Generation – Integrates with plant-wide systems to track shaft motion in real time.

• Heavy Industrial Equipment – Supports vibration analysis and machine diagnostics across diverse manufacturing lines.

• Upgrade & Retrofit Projects – Standard 11 mm design simplifies replacement of older probes without system redesign.

Advantages

• High Measurement Precision – Maintains ±1 % linearity across the full 11 mm range.

• Robust Construction – Stainless-steel housing and ceramic tip withstand corrosive and abrasive conditions.

• Excellent EMI Protection – Internal shielding ensures signal integrity in electrically noisy areas.

• Reliable Long-Term Stability – Factory calibration provides consistent accuracy over years of service.

• Seamless Integration – Fully compatible with Bently Nevada 3300 XL Proximitor systems and monitoring hardware.

• Predictive Maintenance Ready – Enables early detection of bearing wear, rotor bow, and shaft whip to reduce unplanned downtime.

Frequently Asked Questions (FAQ)

1. What sensing principle is used in this probe?

   It employs eddy-current technology to detect minute changes in the gap between the probe tip and the shaft surface.

2. Is it fully compatible with 3300 XL Proximitor sensors?

   Yes, the probe is designed for direct connection to any 3300 XL Proximitor within the specified calibration range.

3. What is the nominal output sensitivity?

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

4. Can it tolerate high vibration levels in turbine environments?

   Yes, it is rated for up to 20 g in the 10–2000 Hz frequency range.

5. Does it require on-site calibration after installation?

   No field calibration is typically necessary; only routine system verification is recommended.

6. How does it maintain signal quality in electrically noisy areas?

   Multi-layer cable shielding and precision connectors reduce electromagnetic interference.

7. Can it measure axial as well as radial displacement?

   While optimized for radial monitoring, it can measure axial movement if mounted appropriately.

8. What is the recommended probe-to-shaft target material?

   It is designed for conductive metallic targets such as steel or other ferromagnetic alloys.

9. Is the probe suitable for continuous online monitoring systems?

   Yes, it is built for permanent installation and 24/7 operation in critical machinery.

10. What is the operating temperature range for consistent performance?

    The probe functions reliably between –40 °C and +120 °C.