330130-080-03-05 | Bently Nevada | 3300 XL Extension Cable

Configured for signal transmission between eddy-current transducers and monitoring instrumentation in machinery protection systems, the Bently Nevada 330130-080-03-05 (330130 Extension Cable) provides direct physical signal path continuity for proximity measurement chains.

Suffix Breakdown & Model Matrix

• 330130: Base model number for 3300 XL series extension cable.
• 080: Cable length of 8.0 meters (26.2 feet).
• 03: Armored cable construction with integrated connector protectors.
• 05: Configuration option including specific agency approvals.

Hardware Specifications

Eddy-Current Probe Scaling and Signal Integrity

The 330130 extension cable maintains the characteristic impedance required for the 3300 XL proximity transducer system. Proper system operation relies on gap voltage validation, with target values typically centered at -10 VDC within the linear operating range. Deviations in cable length or impedance mismatch directly affect the accuracy of rotor dynamics measurements. The design utilizes high-frequency shielding to provide cross-talk suppression in industrial environments, preventing external electromagnetic interference from introducing noise into the transducer signal path.

Frequently Asked Questions

Q: Can the armored cable be field-terminated or shortened?

A: No. The electrical capacitance and impedance are factory-tuned to the specific length. Any modification to the cable structure or length will invalidate the system calibration and introduce measurement errors.

Q: How should the cable armor be grounded?

A: The armor provides mechanical protection. Ensure the armor is grounded per local electrical codes at the entry point of the junction box if required to maintain effective electromagnetic shielding and prevent ground loops.

Field Installation Guidelines

1. Ensure all system power is isolated before disconnecting or connecting transducer components to prevent electrical transients.
2. Route the extension cable through dedicated conduit or cable trays to minimize mechanical stress and interference. Ensure the minimum bend radius is maintained to protect the internal coaxial structure.
3. Clean all connector pins with an appropriate electronic contact cleaner prior to mating to ensure optimal signal continuity and minimize resistance at the connection points.
4. Finger-tighten all coaxial connections. Do not utilize mechanical tools, as over-torquing can damage the internal connector threads or center pin alignment.
5. Verify that the total system length (Probe + Extension Cable) matches the configuration settings programmed in the monitor or Proximitor module.