Configured for rotor position and vibration measurement in machinery protection systems, the Bently Nevada 330880-16-00-039-03-02 (330880-16-00-039-03-02 PROXPAC XL Proximity Transducer) provides direct physical/electrical execution.

Model Matrix & Suffix Breakdown

• 330880: PROXPAC XL Proximity Transducer Assembly core model
• 16: 3300 XL 8 mm probe without approvals option
• 00: No standoff adapter option
• 039: 3.9 in (99.06 mm) probe penetration option
• 03: One 3/4-14 NPT fitting, one 3/4-14 NPT to 1/2-14 NPT SST reducer, and two plugs option
• 02: 3/4-14 NPT mounting thread option

Hardware Specifications

Rotor Dynamics and Gap Voltage Validation

• The integrated eddy-current probe scaling maps shaft displacement directly to proportional voltage outputs without external extension cable losses.
• System gap voltage validation targets a nominal -10 VDC static operating point during zero-speed calibration checks.
• Integrated Proximitor circuitry inside the housing enclosure eliminates signal degradation and cross-talk interference common in remote sensor runs.
• Rotor dynamics analysis leverages the 2 mm linear measurement range to capture radial vibration and axial position transients accurately.

Ordering Information

• 1 x 330880-16-00-039-03-02 PROXPAC XL Transducer Assembly
• 1 x 3/4-14 NPT Fitting
• 1 x 3/4-14 NPT to 1/2-14 NPT SST Reducer
• 2 x Plugs

Field Installation Guidelines

• Ensure the 3/4-14 NPT mounting thread achieves at least 5 full threads of engagement to secure mechanical stability under high vibration.
• Route signal output wiring through dedicated conduit away from high-voltage power lines to preserve loop immunity.
• Torque all NPT fittings and housing covers to specified limits to maintain IP66 environmental sealing integrity in harsh operating locations.
• Verify proper earth grounding of the transducer housing shield to eliminate ground loops prior to energizing the loop power supply.

Frequently Asked Questions

• What is the primary function of the PROXPAC XL assembly?

  It combines an 8 mm proximity probe and an integrated Proximitor sensor inside a protective housing to measure shaft vibration and position directly.

• Why is an external extension cable omitted in this design?

  The Proximitor sensor is embedded directly within the housing cover, connecting the probe internally and routing field wiring straight to the monitor.

• What power supply voltage range is required for operation?

  The unit operates on an input voltage ranging from -17.5 VDC to -26 VDC with a maximum current draw of 12 mA.

• What is the nominal output signal range?

  The transducer delivers an output signal spanning from -1 VDC to -17 VDC proportional to the observed target gap.

• How should the NPT mounting threads be sealed?

  Apply approved industrial thread sealant and ensure a minimum engagement of 5 full threads to prevent leakage and mechanical loosening.

• What environmental protection rating does the housing provide?

  The enclosure is engineered to IP66 standards, protecting internal electronics from harsh industrial dust and moisture exposure.

• Can standard extension cables be attached to this unit?

  No, the internal connection between the probe tip and Proximitor eliminates the requirement or physical interface for standard extension cables.

• What is the recommended static operating gap?

  The system is designed around a recommended static gap of 1.27 mm (50 mils) to utilize the full linear range.