Configured for displacement and vibration monitoring in 3300 System platforms, the Bently Nevada 330101-00-27-10-02-05 (330101 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 Configuration Matrix

• Part Number: 330101-00-27-10-02-05

• Probe Type: 3300 XL 8 mm

• Unthreaded Length: 00 - 0.0 in

• Case Length: 27 - 2.7 in

• Total Length: 10 - 1.0 m (3.3 ft)

• Connector: 02 - Miniature coaxial ClickLoc connector

• Agency Approval: 05 - CSA, ATEX, IECEx Approvals

Hardware Specifications

Mechanical Monitoring and Transducer Dynamics

The 330101 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 330101 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

• Why are CSA, ATEX, and IECEx approvals relevant for this model?

  These certifications confirm that the probe meets safety requirements for operation in hazardous areas, provided that the installation complies with local safety standards and barriers.

• What happens if the probe case length is incorrect for the installation?

  Incorrect case length prevents proper positioning, making it impossible to achieve the required gap voltage for linear operation. Verify physical clearance before installation.

• 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.

• Is the 1.0 meter cable length total or just for the probe?

  The 1.0 meter length represents the total length of the probe assembly, including the integrated coaxial cable and the ClickLoc connector.

• Can I use a longer extension cable than the system is designed for?

  No. The system is impedance-matched. Using incorrect cable lengths will introduce signal phase shifts and amplitude errors, compromising data accuracy.

• How is the unthreaded length utilized?

  The unthreaded length provides a smooth section on the probe body, allowing the installer to adjust the mounting depth precisely without being limited by thread engagement.