The Bently Nevada 330105-02-12-10-02-CN serves as the primary 330105 Proximity Probe utilized to execute non-contact shaft vibration and position displacement measurements across 3300 XL Transducer System platforms. The hardware measures high-frequency magnetic field alterations created by Eddy currents on a target shaft surface. It converts physical distance variations into an analog electrical signal without making physical contact with the machine rotor.

Configuration Vector & Suffix Codes

• 330105: Base model designation for a 3300 XL 8 mm proximity probe configuration with 3/8-24 UNF threads.

• 02: Unthreaded length configuration option mapping to 0.2 inches of smooth barrel length.

• 12: Overall case length option mapping to 1.2 inches of total housing structure length.

• 10: Total cable length option specifying a 1.0 meter (3.3 feet) integrated coaxial connection.

• 02: Miniature coaxial ClickLoc connector configuration without an integrated connector protector.

• CN: Suffix identifying regulatory compliance and approvals issued by NEPSI for localized hazardous zone deployment within China.

Technical Parameters

Gap Voltage Validation & Rotor Dynamics Tracking

The transducer mechanism functions via high-frequency magnetic field coupling to establish native eddy-current probe scaling baselines. Absolute positioning adjustments during device installation require gap voltage validation, aiming for a targeted stable offset voltage of -10 VDC to lock the static operational posture at the geometric midpoint of the 80 mil linear window.

The tip coil architecture provides physical cross-talk suppression. This layout prevents electromagnetic field leakage between adjacent 3300 XL sensors, allowing tight-proximity installation configurations when checking complex X-Y orthogonal shaft motion trends or high-velocity rotor dynamics behaviors.

Packaging Configuration Listing

• 1 Bently Nevada 330105-02-12-10-02-CN proximity probe assembly with integrated 1.0 meter lead line.

• 1 Factory-fitted miniature coaxial ClickLoc termination point.

• 1 Hexagonal locknut matched to the 3/8-24 UNF thread structure.

On-Site Installation Mandates

• Mechanical Torquing Limits: Tighten the 3/8-24 UNF housing shell to a baseline value of 4.5 N-m (40 in-lbf). Do not exceed a maximum of 13.6 N-m (120 in-lbf) to protect internal coaxial solder connections.

• Conduit Routing Requirements: Run all integral 1.0 meter lines inside dedicated, separate grounded steel conduits to avoid radio frequency or electrostatic interference from motor driving blocks.

• Bending Radius Constraints: Maintain a strict minimum physical bend radius of 25.4 mm (1.0 inch) during final structural cable layout to avoid disrupting coaxial signal impedance.

Technical Performance FAQ

• What target gap voltage must be maintained when locking down the physical installation position?

  The probe must be mechanically adjusted until the Proximitor loop monitors a gap voltage validation value of -10 VDC, marking the precise linear midpoint.

• Is it possible to complete a sensor hot-swap when the Proximitor module is active?

  Yes, the sensor is completely passive and allows hot-swap actions. Disconnecting the ClickLoc line triggers an open-circuit fault but inflicts no hardware damage.

• What total system length constraint matches this 1.0 meter probe variant?

  A 1.0 meter probe requires matching with a 4.0 meter extension cable to function cleanly with a standard 5.0 meter tuned Proximitor sensor module.

• How do non-standard shaft steel formulations change the system scaling response?

  Alternative shaft materials alter the eddy-current probe scaling, causing deviations from the native 200 mV/mil output sensitivity profile.

• What problem does the 0.2 inch unthreaded length option prevent?

  The 0.2 inch unthreaded section prevents the probe threads from binding against the internal sleeve entry wall, allowing clean positioning adjustments.

• Does the CN designation change the physical layout or response curves of the probe tip?

  No, the CN suffix solely documents official regional NEPSI hazardous area safety approvals. The underlying hardware design is unchanged.

• What damage occurs if the structural torque ceiling of 13.6 N-m is exceeded?

  Excessive torque deforms the stainless steel body casing, leading to fractured solder joints inside the core coil winding or coaxial junction.

• How does the sensor tip handle high pressure differentials across the casing wall?

  The sensor assembly is sealed with an internal Viton barrier, though it is intended for machine case oil mist containment rather than high-pressure process sealing.