Configured for displacement measurement in rotating machinery, the Bently Nevada 330104-00-24-10-02-00 (330104 Proximity Probe) provides direct physical signal execution via eddy-current induction within 3300 XL monitoring systems. This device translates target gap variation into a proportional electrical signal.

Suffix Breakdown & Model Matrix

• 330104: 8 mm Proximity Probe, Reverse Mount

• 00: Unthreaded Length (0 mm)

• 24: Overall Case Length (240 mm)

• 10: Total Length (1.0 meter)

• 02: Connector Type (Miniature coaxial ClickLoc connector)

• 00: Agency Approval (Not required)

Hardware Specifications

Mechanical Monitoring & Rotor Dynamics

The 3300 XL transducer architecture utilizes precise eddy-current probe scaling to ensure linear response to rotor displacement. Accurate rotor dynamics analysis requires the gap voltage to be validated at a -10 VDC target during static machine conditions. Cross-talk suppression is maintained by matched high-frequency oscillator circuits, ensuring that individual probe signals remain isolated in high-density installations. Shielding continuity is mandatory to prevent electromagnetic noise from degrading the signal-to-noise ratio in high-vibration applications.

Ordering Information

• 1 Bently Nevada 330104-00-24-10-02-00 Proximity Probe

• 1 Mounting jam nut

• 1 Technical installation document

Field Installation Guidelines

• Gap Positioning: Set the probe tip at a nominal 1.27 mm gap from the target surface during installation.

• Torque Specifications: Secure the locknut at 5.6 N-m; avoid exceeding this limit to prevent damage to the probe housing or threads.

• Cable Handling: Maintain a minimum 25 mm bend radius; secure the coaxial lead to prevent vibration-induced fatigue.

• Grounding: Terminate the cable shield only at the monitor input terminals to avoid ground loops.

Frequently Asked Questions

• What is the primary use of the reverse mount configuration?

  Reverse mount probes are installed from inside the machine case, which is standard for applications where the connector must reside outside the bearing housing.

• Can this probe operate without a matching Proximitor sensor?

  No, the probe is a passive component and requires a 3300 XL Proximitor sensor to generate the excitation frequency and convert the signal.

• What occurs if the probe tip is installed at an incorrect gap?

  Operating outside the linear range results in signal clipping and loss of sensitivity, leading to inaccurate vibration measurement.

• Is the probe sensitive to ambient temperature changes?

  The probe is designed for stable performance up to 177 deg C, with minimal drift in electrical output across the specified temperature range.

• How do I confirm the probe is operating correctly?

  Measure the gap voltage at the monitor card input; a reading of -10 VDC indicates the probe is positioned correctly in the linear range.

• Can I use this probe on non-metallic targets?

  No, the output is calibrated for AISI 4140 steel; using other materials requires a significant recalibration of the Proximitor.

• What is the consequence of a broken coaxial shield?

  A broken shield allows electromagnetic interference, which manifests as increased signal noise floor and false vibration alarms.

• Does this probe support hot-swapping?

  Hot-swapping the probe leads while the system is powered will cause a "Transducer Not OK" condition on the monitoring instrumentation.