Bently Nevada 330130-040-01-CN Extension Cable

Configured for signal transmission between eddy-current transducers and monitoring instrumentation in machinery protection systems, the Bently Nevada 330130-040-01-CN (330130 Extension Cable) provides direct physical signal path continuity for proximity measurement chains.

Suffix Breakdown & Model Matrix

• 330130: Base model number for 3300 XL Standard Extension Cable.
• 040: Cable length of 4.0 meters (13.1 feet).
• 01: Armored cable construction with standard connector protector.
• CN: Agency approval option including ATEX, IECEx, and Chinese NEPSI hazardous area markings.

Hardware Specifications

Eddy-Current Probe Scaling and Signal Integrity

The 330130 extension cable is designed to maintain the electrical characteristics of the 3300 XL proximity transducer system. Proper system operation is dependent on maintaining the specific system-level impedance, which impacts the transducer output scaling. Field technicians must perform a gap voltage validation, targeting -10 VDC at the center of the linear range, to ensure accurate rotor dynamics data. The integrated shielding design provides cross-talk suppression, preventing electromagnetic interference from contaminating the low-level signal paths typical in complex rotating machinery environments.

Frequently Asked Questions

Q: Can I replace the cable length without recalibrating the monitoring system?

A: No. The 3300 XL transducer system is a calibrated set consisting of a probe, extension cable, and Proximitor. Changing the cable length alters the electrical path, requiring a reconfiguration of the monitoring system settings.

Q: How should the armor be grounded?

A: The armored cable section provides mechanical protection; it does not replace the requirement for standard signal shielding. Follow the site-specific hazardous area wiring practices regarding the termination and grounding of the armor braid.

Field Installation Guidelines

1. Route the cable through dedicated electrical conduit, maintaining separation from high-voltage AC lines to prevent induced noise.
2. Ensure the minimum bend radius is strictly followed to prevent damage to the internal coaxial core and outer armor.
3. Clean all coaxial connectors with a high-purity contact cleaner prior to mating to ensure optimal signal continuity and prevent oxidation.
4. Finger-tighten all connectors. Do not use mechanical tools as this can strip threads or damage the connector internal pin assembly.
5. Apply connector protectors to all exposed joints to mitigate the risk of ingress from environmental contaminants and moisture.