The Bently Nevada 330104-00-20-05-02-00 3300 XL 8 mm Proximity Probe is a high-performance sensor designed for non-contact vibration and position measurement in rotating machinery. As part of the globally trusted 3300 XL series, this proximity probe operates using eddy current technology to deliver precise, real-time monitoring of shaft position and dynamic behavior.

Matched with a compatible extension cable and Proximitor sensor, this probe provides an accurate linear output corresponding to shaft-to-probe distance, enabling machine protection systems to detect mechanical degradation — before it results in costly unplanned downtime.

Built to operate in demanding industrial environments, this particular model — with a 0.5 meter total length, armor cable, and standard 8 mm tip — is ideal for critical machinery in power generation, oil & gas, refining, chemical processing, and other industries where robust, reliable measurements are essential for equipment health monitoring and protection.

Product Specifications

Applications

The 330104-00-20-05-02-00 3300 XL 8 mm Proximity Probe is widely used across many industries for condition monitoring and protection of critical rotating machinery:

• Gas & Steam Turbines

  Monitoring shaft vibration and axial position for predictive maintenance and protection.

• Compressors

  Detecting excessive vibration and shaft displacement in centrifugal and reciprocating compressors.

• Electric Motors

  Providing early warnings of imbalance, misalignment, and bearing wear.

• Pumps

  Safeguarding pump shafts in chemical, refining, and water/wastewater industries.

• Gearboxes

  Monitoring rotational dynamics and gear mesh conditions.

• Paper Machines, Blowers, and Fans

  Protecting against excessive mechanical wear and operational inefficiencies.

• Power Generation

  Ensuring turbine generator health in fossil, nuclear, and renewable plants.

Product Advantages

• Trusted Global Standard

  The 3300 XL 8 mm system is the world’s most widely used proximity transducer system.

• Wide Temperature Capability

  Rated up to 177 °C for probe tip operation — suited to hot machinery environments.

• Robust Armor Cable

  Provides mechanical protection for long cable runs in harsh industrial sites.

• Precise, Reliable Output

  Low noise and high linearity ensure dependable measurements.

• Sealed, Rugged Design

  Tolerates 100% humidity and challenging process conditions.

• Extensive Certifications

  Approved for use in hazardous and explosive atmospheres (CE, ATEX, CSA, IECEx).

• Broad Application Versatility

  Suitable for everything from critical turbines to industrial process machinery.

• Compatibility

  Works with Bently Nevada 3300 XL Proximitor sensors and extension cables.

• Long Service Life

  Engineered for years of trouble-free operation without recalibration.

• Simplified Installation

  Armored cable and standard connectors simplify field routing and setup.

Frequently Asked Questions (FAQ)

1. What machinery is this probe designed for?

   It is ideal for turbines, compressors, motors, pumps, fans, and gearboxes.

2. What is the benefit of an armored cable?

   The armor protects the cable from physical damage and abrasion during routing and operation.

3. What is the length of this particular model?

   This version comes with a 0.5 meter cable.

4. Can this probe handle outdoor environments?

   Yes — it is sealed for 100% humidity and suitable for outdoor-rated enclosures.

5. How does the probe measure shaft vibration?

   It outputs a voltage proportional to the shaft’s dynamic position relative to the probe tip.

6. Is this model certified for use in explosive environments?

   Yes — it carries ATEX Zone 2, CE, CSA, and IECEx certifications.

7. Does the probe require periodic recalibration?

   No — the 3300 XL probes are designed for long-term stability without recalibration.

8. What is the system’s frequency response?

   0 Hz to 10 kHz (±3 dB).

9. What shaft material is recommended?

   4140 steel or equivalent, as per factory calibration.

10. Is the probe compatible with older 3300 Proximitor modules?

    Yes — it is backward compatible with most 3300 series Proximitor sensors.