Configured for displacement and vibration monitoring in 3300 System platforms, the Bently Nevada 330103-00-09-20-02-00 (330103 Proximity Probe) provides direct physical signal transduction for rotating machinery analysis. The transducer utilizes eddy-current induction to convert target surface proximity into linear voltage signals.

Suffix Breakdown and Model Matrix

• Part Number: 330103-00-09-20-02-00

• Probe Type: 3300 XL 8 mm (M10 x 1 thread, without armor)

• Unthreaded Length: 00 - 0 mm

• Case Length: 09 - 90 mm

• Total Length: 20 - 2.0 m

• Connector: 02 - Miniature coaxial ClickLoc connector

• Agency Approval: 00 - Not required

Hardware Specifications

Mechanical Monitoring and Transducer Dynamics

The 330103 transducer relies on precise eddy-current probe scaling to track rotor dynamics. Installer procedures must include gap voltage validation to ensure the signal maintains a -10 VDC target at the linear range center. Proper installation requires active cross-talk suppression by maintaining a minimum side-view clearance of 1.5 inches (38 mm) from the probe tip. This distance prevents interference from mounting hole walls or adjacent sensors, ensuring the integrity of vibration data in high-speed machinery applications.

Ordering Info

• 1 330103 3300 XL 8 mm Proximity Probe

• 1 Threaded mounting nut

Field Installation Guidelines

• Mounting Depth: Install the probe into the machine casing to achieve the specified gap relative to the target surface.

• Proximity Spacing: Ensure a minimum 1.5 inch (38 mm) gap between probe tips when multiple sensors are installed in radial configurations.

• Target Surface: Use only AISI 4140 steel targets, as the probe is factory-calibrated for this material's magnetic permeability.

• Conduit Termination: Utilize appropriate conduit fittings if protection from mechanical damage is required, as this model is unarmored.

Frequently Asked Questions

• Does this probe support direct connection to a PLC?

  No. The probe must be connected to a Bently Nevada Proximitor sensor, which conditions the signal into the appropriate voltage level for further processing by a PLC or monitoring system.

• Can I use this probe with 3500 System modules?

  Yes, this probe is compatible with the 3300 XL series infrastructure, which is supported by various 3500 series vibration monitoring modules.

• How do I verify the probe is functioning correctly?

  Measure the gap voltage at the Proximitor sensor output terminals; it should correspond to the distance between the probe and the shaft according to the calibration curve.

• Can I shorten the probe cable in the field?

  No. The 3300 XL system is a calibrated unit. Altering the cable length changes the impedance, which invalidates the calibration and degrades signal linearity.

• What happens if the gap voltage is not -10 VDC?

  A gap voltage outside the target range indicates the probe is either too close or too far from the shaft, potentially operating outside the linear measurement zone.

• Can I use this with any target material?

  Factory calibration is tuned for AISI 4140 steel. Other materials alter the electrical response; if used, the system requires non-standard field calibration.

• Is the 2.0 meter cable length total or just for the probe?

  The 2.0 meter length represents the total length of the probe assembly, including the integrated coaxial cable and the ClickLoc connector.

• Does this probe require shielding?

  The probe is unarmored (M10 x 1 thread, without armor). It should be installed within a protective conduit if exposed to mechanical damage or heavy debris.