Description

The Bently Nevada 330101-00-65-10-11 is a highly specialized 8 mm proximity probe designed for use within the 3300 XL Proximity Transducer System. This configuration features a fully threaded 6.5-inch case with zero unthreaded length, allowing for deep thread engagement and highly adjustable mounting depths. Engineered specifically for harsh rotating machinery environments, this probe integrates Bently Nevada's patented FluidLoc cable technology (Option 11). The FluidLoc design establishes an internal barrier that prevents lubricating oil, moisture, or other process fluids from leaking or wicking through the cable's interior into outer areas. This specific configuration is supplied without armor and includes a pre-installed connector protector, shielding the miniature ClickLoc coaxial connector from environmental contaminants and ensuring robust signal integrity in critical vibration monitoring chains.

When deployed as part of a complete 3300 XL monitoring system, the probe operates on the eddy-current principle to perform non-contact shaft vibration and position measurements. It is backward-compatible and interchangeable with non-XL 3300 series 5 mm and 8 mm system components, providing an easy path for system upgrades. The mechanical structure of the probe utilizes TipLoc molding, creating a highly robust bond between the probe tip and the stainless steel case, which provides superior resistance to physical wear and mechanical stress.

Features

• 8 mm Probe Tip: Molded from polyphenylene sulfide (PPS) to resist high temperatures and chemical erosion while providing a robust casing for the internal eddy-current coil.
• FluidLoc Cable Technology: Patented internal cable design prevents lubricating oil, fluids, and gases from wicking or leaking through the core of the cable.
• Connector Protector Included: Comes equipped with a pre-installed female connector protector that slides securely over the male connector of the extension cable, protecting against moisture and turbine oil.
• Fully Threaded Case: A 6.5-inch overall case length with 3/8-24 UNF threads and zero unthreaded section allows for flexible positioning in deep or crowded bearing housings.
• Unarmored Design: FEP-insulated coaxial cable provides standard flexibility, making it easier to pull through protective conduit routes.
• Interchangeable Components: Fully interchangeable with compatible 3300 XL extension cables and Proximitor sensors without requiring individual system calibration.

Applications

This proximity probe is widely utilized across critical heavy industries for machinery protection, including:

• Steam and gas turbine shaft vibration and axial position measurement.
• Compressor and high-pressure pump rotor displacement monitoring.
• Fluid-film bearing oil seal monitoring, where preventing fluid wicking is paramount.
• Speed and Keyphasor reference measurements on critical rotating machinery.

Ordering Information

Technical Specifications

Installation Guidelines

• Probe Gap Calibration: Mount the probe with the appropriate physical gap (typically 1.27 mm or 50 mils) to establish the correct DC bias voltage and ensure linear system calibration.
• Cable Protection: Route the FEP-insulated coaxial cable using proper shielding, mechanical isolation, and grounding practices to eliminate external electromagnetic noise. Do not exceed the minimum cable bend radius of 25.4 mm (1.0 inch).
• Thread Engagement: Hand-tighten the threaded probe case during installation to ensure smooth engagement. Avoid exceeding a tightening torque of 11.2 N-m (100 in-lbf) to prevent casing damage.
• Connector Care: Hand-tighten the ClickLoc connectors until they click; do not use pliers on standard gold-plated brass ClickLoc connections. Ensure the connector protector is fully seated.