Bently Nevada 330901-10-24-10-02-00 3300 NSv Proximity Probes

Description

A partially unthreaded 1/4-28 UNF steel probe body with 1.0 inch of unthreaded length (Option 10), a 2.4-inch overall case length (Option 24), and a 1.0-meter standard cable (Option 10) defines this 3300 XL NSv proximity transducer configuration — 330901-10-24-10-02-00.

This specific configuration does not include a stainless steel armor jacket or connector protector (Option 02) and is designed for applications where hazardous area approvals are not required (Option 00). In contrast to armored configurations such as the 330902 series or configurations featuring FluidLoc cable technology (Option 11 or 12), this unarmored standard-cable model provides a lightweight, highly flexible solution for tight installation spaces with reduced target area geometry.

Features

• 1/4-28 UNF Thread Configuration: Manufactured with standard threads and no protective armor (330901 series).
• 1.0 Inch Unthreaded Length (Option 10): Matches specified mounting requirements where a portion of the probe body must remain unthreaded.
• 2.4-Inch Case Length (Option 24): Designed for standard deep-port insertion installations.
• 1.0-Meter Total Length (Option 10): Provides 1.0 meter (39 inches) of integrated coaxial cable to connect directly to a 330930 extension cable or compatible 330980 Proximitor sensor.
• ClickLoc Miniature Coaxial Connector (Option 02): Standard ClickLoc male connector without connector protector on standard 75-ohm cable.
• No Agency Approvals Required (Option 00): Suitable for non-hazardous area environments.

Applications

The 3300 NSv Proximity Transducer System is designed for machinery with small target diameters or limited mounting clearance, where standard 8 mm probes cannot be installed due to space constraints. Typical installations include:

• Vibration and position measurements on small-bore rotating machinery
• Radial vibration and axial position sensing on aeroderivative gas turbines
• Centrifugal compressors and pumps with small shafts (under 30 mm)
• Turbine auxiliary systems and gearboxes
• Fluid-film bearing monitoring in space-restricted environments

Ordering Information

Technical Specifications

Installation Guidelines

Proper mechanical and electrical installation is critical to ensure accurate proximity probe measurements:

• Case Torque Limit: When installing the 1/4-28 UNF probe case, do not exceed the maximum recommended torque of 5.1 N m (45 in lb) to prevent thread or casing damage.
• Cable Bend Radius: Maintain a minimum coaxial cable bend radius of 25.4 mm (1.0 in) during cable routing.
• Thread Engagement: Ensure proper thread engagement limits (typical maximum thread engagement for a 1/4-28 UNF probe is 0.375 inches) to prevent physical contact issues or binding.
• Connector Handling: ClickLoc connectors must be joined finger-tight. Ensure connectors are clean and dry before connection. Installing a connector protector or using silicone tape (not recommended in oil-exposed environments) is advised to prevent fluid ingress.
• Probe Gapping: Set the initial probe gap to approximately 1.0 mm (40 mils) using a feeler gauge or by monitoring the Proximitor output voltage (typically -9.0 Vdc to -10.0 Vdc) for centering in the linear range.

Compliance and Certifications

This specific configuration (Option 00) is designated for applications where specialized hazardous area safety approvals are not required. For applications requiring intrinsic safety, non-incendive, or zone certifications (such as ATEX, IECEx, or CSA), specify the Option 05 (Multiple Approvals) configuration.