The Bently Nevada 330105-02-12-05-02-15, also cataloged as the 330105 Proximity Probe, operates as a dedicated hardware component for non-contacting displacement measurement within 3300 XL 8mm monitoring systems.

Model Configuration & Suffix Summary

The 330105-02-12-05-02-15 defines the physical and connectivity characteristics of the 3300 XL 8mm transducer system:

• 330105: 8mm Proximity Probe, 3/8-24 thread, without armor.
• 02-12: Probe Case Length, 02 (30mm), Thread Size, 12 (120mm).
• 05: Total Case Length (30mm).
• 02: Connector type (Connector with connector protector).
• 15: Cable length (1.5 meters).

Physical and Electrical Parameters

TSI & Rotor Dynamics Characteristics

The 330105-02-12-05-02-15 is engineered for precise rotor position and vibration monitoring. It requires eddy-current probe scaling aligned with a calibrated target material (typically AISI 4140 steel). For optimal linearity, gap voltage validation targets are set at -10 VDC at the mid-linear range. The probe tip and internal coil construction suppress cross-talk during multi-probe installations, ensuring signal integrity when monitoring complex rotor dynamics such as shaft centerline movement and radial vibration orbits.

Scope of Delivery

1. 1 x 330105-02-12-05-02-15 8mm Proximity Probe
2. 1 x Connector Protector
3. 1 x Calibration Data Sheet

Mounting and Integration Protocols

• Ensure the probe is mounted at a 90-degree angle to the target surface to maintain linear response.
• Utilize the provided thread engagement for 3/8-24 mounting fixtures; torque specifications must not exceed 5.6 Nm.
• Ensure proper cable routing and strain relief to prevent mechanical fatigue at the probe-to-cable interface.
• Verify ground continuity between the probe housing and the mounting bracket to minimize electromagnetic interference.

Technical Inquiries

• Q: What is the required gap voltage for this probe?

  A: The recommended gap voltage is -10 VDC, corresponding to the middle of the 2 mm linear range.

• Q: Is this probe compatible with older 3300 system extensions?

  A: No, the 3300 XL system requires specific 3300 XL extension cables to ensure correct system impedance and calibration.

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

  A: No, the system is factory calibrated as a matched set. Modifying the cable length will invalidate the calibration.

• Q: What is the maximum operating temperature for the probe tip?

  A: The probe tip is rated for continuous operation up to 177 deg C.

• Q: How is the probe protected against moisture at the connector?

  A: Each unit is supplied with a connector protector to prevent oxidation and moisture ingress during operation.

• Q: Does this probe require a specific proximity sensor?

  A: Yes, it must be paired with a 3300 XL Proximitor sensor calibrated for this specific probe type.

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

  A: Using a non-ferrous target will require a different calibration curve and significantly reduces the linear range.

• Q: What is the purpose of the 8mm probe designation?

  A: The 8mm refers to the diameter of the probe tip, which defines the sensing area and the required clearance for the magnetic field.