The Bently Nevada 330906-02-12-10-12-05, also cataloged as the 330906-02-12-10-12-05 Proximity Probe, operates as a dedicated hardware component for high-frequency vibration and axial displacement execution within machine monitoring architectures.

Configuration And Model Matrix

• Base Model: 330906 - 3300 NSv Reverse Mount Probe
• Thread Option: 02 - 3/8-24 UNF threads
• Unthreaded Length Option: 12 - Custom or specific unthreaded case layout
• Total Length Option: 10 - 1.0 meter (39 in) cable length
• Connector and Cable Option: 12 - Miniature coaxial ClickLoc connector, FluidLoc cable
• Agency Approval Option: 05 - Multiple Approvals

Hardware Specifications

Rotor Dynamics And Eddy-Current Probe Scaling

The transducer assembly utilizes eddy-current probe scaling to convert physical gap variations into proportional electrical output signals with an average scale factor of 7.87 V/mm (200 mV/mil). Maintaining operational accuracy requires rigorous gap voltage validation targeting a nominal center point between -9 VDC and -11 VDC. Cross-talk suppression and matched impedance cabling are implemented to preserve signal fidelity across high-speed rotor dynamics tracking in restricted installations.

Ordering Information

• 1 x 330906-02-12-10-12-05 3300 NSv Reverse Mount Probe (3/8-24 UNF thread, 1.0 meter FluidLoc cable with miniature coaxial ClickLoc connector)

Mechanical Installation Guidelines

• Thread Engagement: Screw the 3/8-24 UNF reverse-mount probe housing into the mounting port while adhering to manufacturer torque thresholds.
• Gap Voltage Adjustment: Calibrate the physical air gap until the multimeter reads the specified nominal center voltage between -9 VDC and -11 VDC.
• Lead Routing: Route the FluidLoc coaxial cable away from high-voltage power conduits to eliminate induced electromagnetic interference.
• Connector Locking: Engage the miniature coaxial ClickLoc connector fully until a positive click confirms complete pin insertion and locking.

Frequently Asked Questions

• What is the primary function of this reverse-mount probe?

  The probe detects physical air gap clearance between its tip and a rotating shaft, converting mechanical motion into a vibration signal.

• What thread standard does the probe housing use?

  The sensor features a 3/8-24 UNF thread specification.

• Does this transducer component require an external power supply?

  No, it operates as a passive inductive element powered entirely by the connected Proximitor sensor unit.

• What is the nominal output scale factor for the NSv system?

  The transducer delivers an average scale factor of 7.87 V/mm (200 mV/mil).

• What is the total integrated cable length?

  This specific configuration includes a total cable length of 1.0 meter (39 in).

• What connector type is attached to the cable end?

  It uses a miniature coaxial ClickLoc connector paired with a FluidLoc cable build.

• How should the static gap voltage be set during startup?

  The mechanical gap must be adjusted until the output voltage rests inside the linear window of -9 VDC to -11 VDC.

• What is the primary application scope for NSv reverse mount probes?

  They are optimized for tight spaces, small shafts under 51 mm, and flat targets under 15 mm where standard probes cannot fit.