The Bently Nevada 330101-10-27-05-02-05, also cataloged as the 330101 Proximity Probe, operates as a dedicated hardware component for sensing rotor position and vibration displacement within the 3300 XL transducer system.

Model Suffix Configuration

• Model: 330101 (3300 XL 8 mm Probe)

• Total Length: 1.0 meter

• Mounting Thread: 3/8-24 UNF

• Unthreaded Length: 27 mm

• Total Case Length: 05 (50 mm)

• Connector: Miniature coaxial ClickLoc connector

• Agency Approval: 05 (Multiple Approvals)

Hardware Specifications

Mechanical Monitoring Characteristics

Eddy-current probe scaling is defined by the impedance interaction between the probe tip and the metallic target. The 330101 transducer system produces an output signal proportional to the gap distance. Operators must perform gap voltage validation to ensure the signal remains centered at the nominal -10 VDC target (at 1.27 mm gap) to preserve linear response. Rotor dynamics analysis is contingent upon accurate probe mounting; cross-talk suppression requires that probes are installed with sufficient separation (typically 3 times the probe tip diameter) to prevent mutual interference of high-frequency carrier signals.

Ordering Information

• 330101-10-27-05-02-05 Proximity Probe unit

• Integrated coaxial cable with ClickLoc connector

• Threaded adjustment nuts (2x)

• Note: Extension cables and Proximitor sensors are ordered as separate components

Field Installation Guidelines

• Surface Preparation: Verify that the target area on the shaft is free of surface imperfections, coatings, or non-conductive residues that would alter the eddy-current signature.

• Perpendicularity: Install the probe at a 90-degree angle to the rotor surface. Misalignment will cause non-linear output and signal degradation.

• Thread Engagement: Utilize the 3/8-24 UNF threads for depth adjustment. Ensure locking nuts are torqued to prevent vibration-induced loosening.

• Shielding: Maintain cable shield integrity. Avoid routing proximity probe cables in the same conduit as high-voltage AC power lines to prevent induced noise.

• Gap Setting: Utilize a calibrated shim or depth micrometer to set the nominal mechanical gap before finalizing the locknut position.

Delivery Information

• Delivery time: 2-7 days when payment finish.

• Logistics: Global distribution via DHL, FEDEX, or UPS.

• Packaging: All units are secured in anti-static industrial packaging to mitigate electrostatic discharge risk and prevent mechanical impact during transit.

Frequently Asked Questions

• Q: Does the probe need bench calibration?

  A: No, 3300 XL series components are manufactured for interchangeability and do not require individual component calibration when used as a system.

• Q: What is the effect of changing the probe cable length?

  A: The system is impedance-calibrated. Modifying the factory-installed cable length will shift the output scale factor and cause measurement errors.

• Q: How does the probe behave if the gap is too small?

  A: If the probe-to-target gap is smaller than the linear range, the output signal will saturate and clip, providing inaccurate vibration data.

• Q: Is the probe tip sensitive to temperature?

  A: The probe is designed for stable operation within the specified -51 deg C to +177 deg C range; however, extreme thermal gradients can cause minor zero shifts.

• Q: Can I use this probe on non-steel targets?

  A: The probe is optimized for 4140 steel. Other target materials will have different magnetic permeability and require system-level recalibration.

• Q: What is the function of the ClickLoc connector?

  A: It provides a tool-less, secure, and vibration-resistant coaxial connection that maintains constant impedance.

• Q: How is the probe grounded?

  A: The probe body acts as the signal return reference and is grounded through the machine housing contact.

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

  A: While the circuit is low-voltage, it is standard engineering practice to isolate the channel or inhibit the alarm logic before performing hardware maintenance.