The Bently Nevada 330104-00-05-10-11-00, also cataloged as the 330104-00-05-10-11-00 Proximity Probes, operates as a dedicated hardware component for signal processing or control execution within industrial automation architectures. This transducer system is engineered to provide non-contact displacement and vibration monitoring. By utilizing an electromagnetic field, the system detects changes in gap distance between the probe tip and the observed shaft. As part of a complete transducer loop, this unit requires precise impedance matching with the corresponding extension cable and Proximitor sensor to maintain output linearity and accuracy across the specified measurement range.

Suffix Breakdown

• 330104: 3300 XL 8 mm extended temperature probe
• 00: Unthreaded length (0 mm)
• 05: Overall case length (50 mm)
• 10: Total length (1.0 meter)
• 11: Connector type (Miniature coaxial ClickLoc connector)
• 00: Agency approval (Not required)

Technical Specifications

Mechanical Monitoring and Signal Processing

The 3300 XL system utilizes eddy current probe scaling to convert target surface proximity into a proportional voltage signal. Achieving measurement accuracy requires gap voltage validation, where technicians must verify a -10 VDC bias at the midpoint of the mechanical range. This standard reference ensures the transducer output stays within the linear region for both DC gap position and AC vibration signal processing. Consistent rotor dynamics monitoring is dependent on this calibration. Cross-talk suppression is maintained by adhering to physical spacing standards to prevent electromagnetic interference between adjacent probe fields, which can induce measurement errors or signal instability.

Ordering Information

• 1 x 330104-00-05-10-11-00 3300 XL 8 mm Proximity Probe
• 1 x Connector protector
• 1 x Mounting nut

Installation Guidelines

• Grounding: The cable shield must be grounded only at the monitoring system end to prevent ground loop currents that interfere with the low-level signal.
• Wiring: Do not exceed the minimum bend radius of 25 mm for the coaxial cable to avoid characteristic impedance variations.
• Shielding: Route the probe coaxial cable in a dedicated conduit separate from high-power AC lines to prevent induced noise.
• Mechanical Mounting: Secure the probe in a rigid, vibration-resistant mount. Use the supplied jam nuts to lock the probe position; ensure a minimum of 5 threads engagement for standard industrial fittings.
• Environmental: Ensure the shaft target material meets the specified conductive standards to avoid non-linear sensitivity profiles.

Frequently Asked Questions

• Q: Can the probe be hot-swapped while the system is energized?

  A: No. Disconnecting the ClickLoc connector while the Proximitor is powered can cause transient voltage spikes, potentially damaging the Proximitor internal circuitry.

• Q: How does the cable length affect system calibration?

  A: The 3300 XL system is a tuned loop. The probe, extension cable, and Proximitor are matched; using an incorrect length will shift the resonant frequency and invalidate the scale factor.

• Q: Is the probe tip sensitive to high ambient temperatures?

  A: The 330104 series is designed for temperatures up to 177 deg C. Exposure exceeding this value will degrade the PPS tip and alter electrical properties permanently.

• Q: How is signal isolation maintained?

  A: The transducer system is galvanically isolated from the machinery frame at the Proximitor level to prevent potential differences from influencing the output signal.

• Q: What is the purpose of the 7.87 V/mm scale factor?

  A: This is the industry-standard sensitivity for 8 mm eddy current probes, ensuring that 1 mm of gap change results in exactly 7.87 V of signal output change.

• Q: Can the coaxial cable be shortened in the field?

  A: No. The coaxial cable length is factory-calibrated. Field cutting introduces impedance mismatching, causing signal reflection and calibration errors.

• Q: What causes non-linear output at the end of the range?

  A: Non-linearity occurs as the probe tip exits the linear detection range of the eddy current field, or if the tip makes physical contact with the shaft surface.

• Q: How do I identify a faulty probe connection?

  A: A faulty connection is identified by monitoring the gap voltage at the Proximitor terminal; values near 0 V or -24 V DC indicate an open or short circuit, respectively.

Engineering Rules

• NPT thread engagement must be monitored to ensure the probe remains rigid under heavy machine vibration.
• Coaxial cable integrity must be verified by checking resistance against the probe coil and the characteristic impedance of the loop.
• The system must be mounted away from high-frequency radio frequency interference sources to avoid signal modulation.