330130-085-01-00 3300 XL Extension Cable | Bently Nevada

The Bently Nevada 330130-085-01-00, also cataloged as the 330130 Extension Cable, operates as a dedicated hardware component for signal path extension between eddy-current probes and Proximitor sensors within machine monitoring systems. This assembly utilizes an armored coaxial construction to maintain signal integrity and mechanical protection across the measurement loop.

Suffix Breakdown & Model Matrix

Hardware Specifications

Rotor Dynamics and Gap Voltage Validation

The accuracy of the 3300 XL system relies on a strictly defined electrical length. Technicians must perform gap voltage validation at the Proximitor sensor output during commissioning, with a target of -10 VDC at the linear center of the probe range. Deviations from this target indicate potential issues with target material properties, probe position, or impedance mismatches caused by cable damage. To ensure effective cross-talk suppression, all cabling must be routed away from electromagnetic interference sources such as high-current power cables or variable frequency drives.

Frequently Asked Questions

Q: Does the addition of the 01 armored option affect the electrical characteristic of the cable?

A: No. The armor is a mechanical sheath applied over the coaxial cable and does not modify the electrical capacitance or impedance characteristics of the internal signal path.

Q: Is it permissible to field-terminate the armored cable if the 8.5 m length is excessive?

A: No. Modifying the cable length alters the calibrated electrical impedance of the 3300 XL transducer system. The assembly is factory-tuned and must be installed at its specified length.

Field Installation Guidelines

• Mechanical Protection: While the armored cable provides high resistance to impact, ensure the minimum bend radius of 25.4 mm (1.0 inch) is maintained to prevent inner coaxial deformation.
• Shield Continuity: The shield must be continuous through the connectors. Ensure the system is grounded at a single point (typically the Proximitor end) to prevent ground loops.
• Connector Care: Inspect the connector interface for cleanliness. Use dielectric grease on the threads to prevent corrosion and ensure a stable electrical connection.
• Routing: Avoid excessive mechanical strain on the connector ends during pull-through operations in conduits. Use appropriate cable pulling grips if necessary.