Bently Nevada 330103-00-10-10-02-00 3300XL Proximity Probe

  The Bently Nevada 330103-00-10-10-02-00 is a 3300 XL series proximity probe designed to deliver high-resolution, non-contact measurement of shaft vibration and position in rotating machinery.
  As the primary sensing element in a proximity transducer system, this probe converts mechanical shaft movement into a stable electrical signal used for machinery protection and condition monitoring.

  Unlike signal processors or monitoring modules, this probe operates directly at the machine interface, making it critical for accurate vibration diagnostics and long-term asset reliability.

Base Part Numbers
330103 – M10×1 thread, without armor
330104 – M10×1 thread, with armor

   The 3300 XL 8 mm Proximity Transducer System is composed of three primary components: a 3300 XL 8 mm proximity probe, a compatible 3300 XL extension cable, and a 3300 XL Proximitor sensor.

   This integrated system produces an output voltage that varies linearly with the distance between the probe tip and the monitored conductive surface. It is capable of measuring both static values, such as shaft position, and dynamic values, including vibration. Typical applications include vibration and position monitoring on fluid-film bearing machinery, as well as Keyphasor reference and rotational speed measurement.

   Among eddy current proximity transducer systems, the 3300 XL 8 mm configuration represents the highest performance level. The standard 5-meter 3300 XL 8 mm system fully meets the requirements of API 670, covering mechanical configuration, linear measurement range, accuracy, and temperature stability. All 3300 XL 8 mm systems deliver consistent performance and support full interchangeability of probes, extension cables, and Proximitor sensors, eliminating the need for individual component matching or bench calibration.

In addition, each 3300 XL 8 mm transducer system component is backward compatible with non-XL 3300 series 5 mm and 8 mm components. This includes compatibility with the 3300 5 mm probe for installations where space limitations prevent the use of an 8 mm probe.

   The Bently Nevada 330103-00-10-10-02-00 proximity probe provides highly accurate, non-contact measurement directly at the shaft, where signal quality is most critical. Using eddy current technology, it delivers a linear voltage output proportional to shaft displacement, enabling precise monitoring of both static position and dynamic vibration. Because the probe operates without physical contact, it avoids wear-related drift and maintains long-term stability. When used within a 3300 XL transducer system, it supports consistent performance without individual matching or calibration, reducing installation complexity and improving overall monitoring reliability.

   Beyond vibration measurement, the 3300 XL proximity probe is commonly applied in shaft position monitoring and Keyphasor reference applications. When installed to observe a once-per-revolution feature, the probe provides a stable phase and speed reference signal. This information is essential for advanced diagnostics such as orbit plots, phase analysis, and startup or coast-down studies. In critical rotating equipment, accurate phase and speed data greatly enhance fault identification accuracy and support predictive maintenance decision-making.

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