Bently Nevada 330101-00-20-10-02-05 3300 XL 8mm Proximity Probe

Technical Specification Overview

The Bently Nevada 330101-00-20-10-02-05 functions as a high-precision, non-contacting displacement sensor within the 3300 XL 8mm Proximity Transducer System. This probe generates an eddy current field to measure the microscopic gap between the probe tip and a rotating shaft. By converting mechanical displacement into a proportional electrical signal, it enables the 3500 Monitoring System to track shaft vibration and axial position with extreme resolution and repeatability.

Design and Functional Capabilities

Engineers designed this specific probe configuration with a 3/8-24 UNF threaded body and a 1.0-meter integral cable. This model utilizes a 2.0-inch overall case length with no unthreaded portion, making it ideal for shallow mounting requirements. Furthermore, the 3300 XL series offers advanced thermal stability and a consistent Scale Factor across a wide temperature range, ensuring that data remains accurate even during the intense thermal cycles of industrial machinery.

• Manufacturer: Bently Nevada
• Model Number: 330101-00-20-10-02-05
• System Series: 3300 XL 8mm
• Unthreaded Length: 0.0 inches
• Overall Case Length: 2.0 inches
• Total Cable Length: 1.0 Meter
• Connector Option: Miniature coaxial ClickLoc connector
• Agency Approval: Multiple Approvals
• Mounting Thread: 3/8-24 UNF

Operational Impact and Applications

This proximity probe actively drives predictive maintenance strategies by delivering a continuous stream of machinery health data. Consequently, plant operators can identify mechanical faults such as rotor imbalance, shaft misalignment, or bearing degradation before they lead to catastrophic equipment failure. Moreover, the “05” approval rating ensures this probe is suitable for global deployment in hazardous areas where explosive atmospheres may be present.

Primary industrial applications include:

• Radial Vibration: Monitoring the dynamic orbit and movement of shafts in centrifugal compressors.
• Axial Position: Tracking the thrust displacement of rotors in steam and gas turbines.
• Keyphasor Signals: Providing a phase reference pulse to synchronize vibration data with rotational speed.

Mechanical Integrity and Resilience

To ensure survival in punishing environments, Bently Nevada utilizes a 304 stainless steel case and a PPS (polyphenylene sulfide) resin tip. This construction provides a hermetic seal against oil, water, and steam ingress. Additionally, the patented ClickLoc connector technology ensures a secure, vibration-resistant electrical path. This locking mechanism prevents the signal loss that often occurs when standard connectors loosen due to the high-frequency mechanical oscillations typical of industrial bearing housings.