Configured for high-frequency eddy-current telemetry in self-contained machinery enclosures, the Bently Nevada 330881-28-00-060-00-02 (330881-28-00-060-00-02 Proximity Probes) provides direct physical displacement and rotor vibration execution.

Configuration Architecture and Suffix Matrix

• Probe and Approvals Option: 28 (3300 XL 8 mm probe with Multiple Approvals)
• Standoff Adapter Option: 00 (No standoff adapter)
• Probe Penetration Option: 060 (60 mm penetration depth)
• Fittings Option: 00 (No fittings; two plugs and two washers)
• Mounting Thread Option: 02 (3/4-14 NPT)
• System Platform: Bently Nevada PROXPAC XL

Hardware Specifications Matrix

Rotor Dynamics and Gap Voltage Validation

Accurate machinery monitoring requires strict verification of probe scaling parameters across the designated linear operating range. Instrumentation technicians must adjust physical mounting depth until the static operating point registers a nominal -10 VDC at the Proximitor output terminals, maintaining an active window between -8 VDC and -12 VDC. Proper dynamic signal acquisition additionally demands effective cross-talk suppression and continuous shield grounding to isolate low-level RF signals from ambient electromagnetic interference generated by adjacent variable-frequency drive systems.

Ordering Info

• 1 x 330881 PROXPAC XL Transducer Assembly Housing
• 1 x Integrated 3300 XL 8 mm Proximity Probe
• 1 x Self-Contained Proximitor Sensor Module
• 2 x Plugs and Two Washers

Field Installation Guidelines

• Sleeve Mounting: Install the outer sleeve onto the machine casing using the 3/4-14 NPT mounting thread specified for this model.
• Penetration Adjustment: Set the probe penetration to the fixed 60 mm depth, ensuring internal mechanical clearances align correctly.
• Torque Specifications: Secure the probe sleeve locknut using 39.3 N m (350 in lb) of torque to prevent loosening during operation.
• Housing Fixation: Position the polyphenylene sulfide housing on the sleeve and tighten the retaining nut to 29.5 N m (260 in lb).

Frequently Asked Questions

• What defines the integration architecture of the PROXPAC XL assembly?

  It integrates an 8 mm probe, matched extension wiring, and a Proximitor sensor into a single housing, removing the need for separate external enclosures.

• What material is used for the PROXPAC XL housing construction?

  The housing is molded from polyphenylene sulfide blended with glass and conductive fibers to strengthen structure and dissipate static charges.

• What environmental protection rating does the housing maintain?

  The enclosure is rated for Type 4X and IP66 environments, providing robust defense against severe industrial conditions.

• How does the system interface directly with monitoring racks?

  Field wiring connects directly between monitoring instruments and the self-contained assembly, bypassing intermediate connection points.

• What is the recommended static gap voltage setting during calibration?

  Technicians should target a nominal -10 VDC output baseline, keeping operational values bounded between -8 VDC and -12 VDC.

• Can standard 8 mm probes be swapped into this self-contained housing?

  Yes, the assembly incorporates standard 3300 XL 8 mm probe and sensor components designed for modular compatibility.

• What torque limits apply to the housing retaining nut?

  The retaining nut on the mounting sleeve must be torqued precisely to 29.5 N m (260 in lb) during mechanical setup.

• Does this configuration support hazardous area operation?

  Yes, the selected options include multiple global hazardous location approvals corresponding to the probe specification.