The Bently Nevada 330103-00-03-10-01-00, also cataloged as the 330103 Extension Cable, operates as a dedicated hardware component for signal transmission between 8 mm proximity probes and Proximitor sensors within rotating machinery monitoring systems.

Suffix Breakdown & Model Matrix

• 330103: 3300 XL Extension Cable, standard construction.

• 00: Connector/Cable Option (Standard connector).

• 03: Cable Length Option (3.0 meters).

• 10: Total Length Option (1.0 meter added to probe length).

• 01: Agency Approval Option (Multiple approvals: CSA, ATEX, IECEx).

• 00: Internal Mounting/Connector Option (Standard).

Hardware Specifications

Mechanical Monitoring and TSI Integration

The 3300 XL system requires precise eddy-current probe scaling to ensure linear output relative to the target displacement. Proper installation requires gap voltage validation, where the system is calibrated to specific lengths to maintain the integrity of the -10 VDC setpoint. Rotor dynamics analysis, such as shaft centerline and orbital vibration monitoring, depends on the phase-coherent signal transmission through the extension cable to the Proximitor. Cross-talk suppression is maintained through high-frequency shielding, preventing interference when multiple cables are bundled in conduit or cable trays.

Ordering Information

• 1 x 330103-00-03-10-01-00 Extension Cable

• 1 x Connector protector (installed on probe-end connector)

• 1 x Cable connector assembly

Field Installation Guidelines

• Routing: Install in dedicated electrical conduit where possible. Avoid bundling with high-power AC cables to minimize induction of electromagnetic noise into the high-frequency carrier signal.

• Bending Radius: Maintain a minimum bend radius of 25 mm to prevent stress on the coaxial dielectric and potential impedance fluctuations.

• Connections: Tighten connectors to the recommended torque specifications using the appropriate tool. Ensure all connections are fully seated to prevent ingress of moisture or oil.

• Shielding: Ensure the cable shield is continuous through the connector; do not ground the shield at multiple points, as this can create ground loops that distort vibration readings.

Frequently Asked Questions

• Can this cable be cut to a shorter length?

  No. The system is factory-calibrated for specific total lengths. Altering the cable length changes the impedance and phase characteristics, leading to measurement errors.

• What is the purpose of the connector protector?

  It seals the coaxial connection against oil, moisture, and debris, which prevents signal degradation and potential drift in the gap voltage measurement.

• Is this cable compatible with non-XL Proximitors?

  No. This cable is designed for 3300 XL system components; using it with older systems will invalidate the linearity and accuracy specifications.

• How do I verify a good connection?

  Use a high-impedance multimeter to check for open or short circuits between the center conductor and the shield before finalizing the installation.

• Does the cable have an armor option?

  The 00 suffix in this specific model indicates no internal armor; for mechanical protection, route the cable inside rigid or flexible electrical conduit.

• Can the cable be used in vacuum environments?

  Yes, the materials used are suitable for high-temperature and vacuum applications, provided the assembly is properly installed and sealed.

• What is the impedance of the coaxial cable?

  The cable is designed with a characteristic impedance of 75 ohm to match the 3300 XL system architecture and minimize signal reflections.

• How should I secure the cable?

  Use non-metallic cable ties at regular intervals to prevent mechanical vibration of the cable itself, which can introduce motion-related signal noise.