Configured for displacement signal conditioning in mechanical monitoring platforms, the Bently Nevada 330881-28-00-050-03-02 (330881-28-00-050-03-02 Proximity Transducer) provides direct physical/electrical execution of RF proximity data conversion.

Model Matrix Decomposition

• 330881: Base Model (3300 XL PROXPAC Proximity Transducer)

• 28: Probe Diameter (Standard configuration)

• 00: Mounting Thread (Standard configuration)

• 050: Total System Length (5.0 meters)

• 03: Connector Type (ClickLoc connector)

• 02: Agency Approval (Multiple standards)

Hardware Specifications

Mechanical Monitoring & TSI Characteristics

The 3300 XL PROXPAC transducer utilizes eddy-current probe scaling to convert non-contacting shaft displacement into a linearized voltage output. During site commissioning, gap voltage validation against -10 VDC targets ensures the probe tip is within the calibrated linear range. Rotor dynamics are monitored through high-frequency oscillator signal demodulation. Cross-talk suppression is achieved through frequency-coded probes, preventing signal interference between adjacent sensor channels in multi-point monitoring racks.

Ordering Info

• One (1) 330881-28-00-050-03-02 Proximity Transducer

• Connector thread protection caps

• Installation manual

Field Installation Guidelines

• Housing Mounting: Mount the transducer housing to a rigid machine surface; ensure the probe tip is secured at the required gap distance.

• Electrical Termination: Connect the -24 VDC power supply and signal output using shielded cable; maintain correct polarity at the terminal block.

• Grounding: Bond the transducer case to the machine ground reference to ensure stable electrical operation.

• Signal Shielding: Route all signal wiring through grounded rigid conduit to mitigate electromagnetic interference from rotating equipment fields.

• Gap Verification: Use a high-impedance voltmeter to verify that the static gap voltage meets the -10 VDC target before machine startup.

Frequently Asked Questions

• Q: Is the PROXPAC XL compatible with external Proximitors?

  A: No, the PROXPAC XL integrates the oscillator and housing into a single physical unit, eliminating the need for a separate Proximitor.

• Q: Can the probe cable be extended or shortened?

  A: No, the system is factory-calibrated for a specific length; modifying cable lengths alters electrical resonance and invalidates the scale factor.

• Q: How do I check for signal integrity?

  A: Use an oscilloscope to observe the RF carrier signal at the probe connector or verify the DC voltage output corresponds to the physical gap.

• Q: Does this unit support hot-swapping?

  A: Yes, the unit can be replaced, but power must be isolated before disconnecting wiring to avoid potential electrical surges or false signals.

• Q: What is the maximum distance for the signal output?

  A: Output signals typically support transmission up to 300 meters using low-capacitance, shielded instrumentation cable.

• Q: Is this device compatible with non-Bently monitoring systems?

  A: Compatibility is contingent on the monitoring system accepting a -24 VDC powered, standard proximity voltage output signal.

• Q: Why is the 5.0 meter cable length specified?

  A: The cable length is factory-set to match the system's electrical resonance for optimal signal transmission accuracy.

• Q: How is ground loop noise mitigated?

  A: The system utilizes a single-point ground connection via the transducer housing to prevent ground loops and noise injection.