The Bently Nevada 330104-00-25-10-02-00 is part of the 3300 XL 8 mm Proximity Transducer System designed and manufactured by Bently Nevada, a trusted name under the Baker Hughes umbrella. This proximity probe is engineered for precise, reliable, and continuous measurement of shaft vibration, position, and speed in critical rotating machinery. It is a cornerstone in the field of condition monitoring and machinery protection systems for industrial assets like turbines, compressors, pumps, and motors.

This model consists of a probe, extension cable, and a Proximitor sensor. The 3300 XL series is known for its rugged design, superior temperature stability, and excellent resistance to electrical interference. The 8 mm probe provides compatibility with Bently Nevada’s standard 5 mm target calibration, ensuring accurate proximity and vibration readings across a broad range of industrial environments.

Product Specifications

Product Applications

• Turbines – gas, steam, and hydroelectric

• Compressors – centrifugal, axial, reciprocating

• Pumps – especially in oil & gas and chemical sectors

• Generators – for continuous shaft displacement monitoring

• Industrial Motors – particularly high-speed or mission-critical drives

• Gearboxes – for early detection of wear or misalignment

• Fans and Blowers – for vibration monitoring

• Marine Propulsion Systems – heavy-duty, high-reliability machinery

Product Advantages

• High Accuracy & Stability – Outstanding linearity and repeatability even in harsh environments.

• Rugged Construction – Stainless steel housing and IP65 rating for protection against dust, oil, and moisture.

• Wide Temperature Operating Range – Suitable for extreme temperature applications.

• Long Cable Options – Up to 30 meters system length without signal loss.

• Field-Proven Design – Used worldwide in thousands of critical machinery installations.

• Compatibility – Integrates seamlessly with Bently Nevada 3300 and 3500 monitoring systems.

• Noise Immunity – Shielded cable and internal design reduce signal distortion and interference.

• API 670 Compliance – Meets the industry standard for machinery protection.

Frequently Asked Questions (FAQ)

1. How do I determine the optimal mounting depth for the 330104-00-25-10-02-00 probe?

   The probe should be mounted such that the tip-to-target distance is within the mid-range of its linear measurement span (typically 1.0 mm gap for 8 mm probes) to maximize sensitivity and accuracy.

2. Can this probe be installed in a high-vibration environment like a gas turbine bearing housing?

   Yes. The probe is specifically engineered for high-vibration environments and is commonly installed in gas turbines, where vibration levels can be significant. It maintains reliable performance even under these extreme conditions.

3. Is the system length (probe + extension cable) customizable, and does it affect calibration?

   Yes, the system length is factory-configurable (e.g., 5, 9, 12, 25, or 30 feet). Calibration is performed based on the total system length, so any changes must be done at the factory to ensure signal integrity and accuracy.

4. How should the extension cable be routed to minimize electrical interference in high-EMI areas?

   The cable should be routed away from high-voltage lines, motors, or VFDs, and grounded correctly. Use shielded conduit and avoid sharp bends or physical stress points to reduce EMI pickup and mechanical wear.

5. What kind of targets is the 330104 probe designed to measure?

   It is calibrated for conductive targets, typically a 4140 steel shaft or collar. Non-ferrous targets may require custom calibration due to different eddy current responses.

6. How does the 3300 XL system respond to temperature drift over long periods?

   The 3300 XL series has excellent thermal stability. It uses high-grade materials and proprietary circuitry to minimize drift over time and temperature fluctuations, suitable for both cold-start and hot-run conditions.

7. Is there a minimum bend radius for the probe cable during installation?

   Yes. The cable should not be bent tighter than a 25 mm (1 inch) radius to prevent internal conductor damage and signal degradation.

8. What is the typical output impedance of the probe, and how does it affect signal transmission?

   The output impedance is matched with the Proximitor sensor to ensure signal fidelity over the cable length. This impedance matching minimizes reflections and attenuation in high-frequency vibration signals.

9. Can this probe be used for thrust position monitoring in axial applications?

   Yes. When installed in an axial direction relative to the shaft, the probe can accurately track thrust movement and detect potential bearing wear or axial misalignment.

10. Is there any visual or electrical indicator for detecting a faulty or damaged probe in service?

    While the probe itself doesn’t include diagnostics, the connected 3500 Series monitoring system can detect open or short circuits and signal loss. Visual inspection should also include checking for worn tip coating, cable cuts, or corrosion at connectors.