Bently Nevada 330901-00-08-10-02-00 3300 NSv Proximity Probe

Description

Option 00 (0.0 in unthreaded length) and Option 08 (0.8 in case length) specify this compact, unarmored 3300 NSv proximity probe configuration — 330901-00-08-10-02-00. This non-contact eddy-current displacement sensor is designed with a 1/4-28 UNF thread and lacks protective armor, optimizing it for installation in exceptionally tight mechanical clearances. Operating with a 1.0 m total length (Option 10) and standard cable configuration (Option 02) terminated with a miniature coaxial ClickLoc connector, it functions within a 3300 XL NSv transducer system. This configuration does not require agency approvals (Option 00).

Unlike armored options or variants with extended case lengths, this specific 0.8 in fully threaded configuration fits space-constrained environments such as centrifugal compressor internals, where counterbore or side-view clearances restrict larger 5 mm or 8 mm probes. It interfaces directly with a 330930 NSv extension cable and a 330980 3300 XL NSv Proximitor Sensor to track shaft vibration or axial position on small targets under 51 mm.

Features

• 1/4-28 UNF standard thread without armor (base model 330901)
• 0.0 in unthreaded length (fully threaded case)
• 0.8 in overall case length (minimum case size)
• 1.0 m (39 in) integrated standard coaxial cable length
• Miniature coaxial ClickLoc connector (Option 02, no connector protector)
• Gold-plated brass connector locking mechanism
• PPS (polyphenylene sulfide) probe tip material with TipLoc molding
• CableLoc design with 220 N pull strength
• No hazardous area agency approvals required (Option 00)

Applications

• Centrifugal air compressors and process gas compressors
• Refrigeration compressors and high-speed turbomachinery
• Radial vibration and axial position measurements on small shaft diameters (under 51 mm)
• Tight clearances where side-view and counterbore restrictions limit larger probes
• Phase reference (Keyphasor) and speed sensing

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Recommended Torque: 5.1 N m (45 in lb) for 1/4-28 UNF probe cases; do not exceed the maximum rating of 7.3 N m (65 in lb) to prevent case deformation.
• Tap Drill Selection: Use a #3 or larger tap drill when preparing mounting holes for the 1/4-28 UNF thread.
• Thread Engagement Limits: Maximum thread engagement depth must not exceed 0.375 in (9.5 mm) to avoid potential binding during installation.
• Connector Integrity: Keep coaxial connections clean, dry, and free of moisture. For turbine oil exposures, do not use silicone tape; utilize molded connector protectors instead.
• Pressure Sealing Notes: Features an integrated Viton O-ring seal. Sustained exposure to process environments below -34 degC (-30 degF) may diminish seal resilience.

Compliance and Certifications

This specific variant has Option E code 00 (Not required), indicating it is not supplied with hazardous area or explosive environment certificates. It is intended for general-purpose industrial applications where intrinsic safety or explosion-proof certifications are not requested.