Bently Nevada 330130-080-12-05 3300 XL Standard Extension Cable

The Bently Nevada 330130-080-12-05, also cataloged as the 330130 Standard Extension Cable, operates as a dedicated hardware component for signal transmission between 3300 XL Proximitor sensors and eddy-current transducers within machine monitoring systems. This assembly facilitates the extension of the physical probe path while maintaining the required electrical impedance for rotor dynamics measurement.

Suffix Breakdown & Model Matrix

Hardware Specifications

Rotor Dynamics and Eddy-Current Probe Scaling

The 3300 XL system relies on precise signal integrity to maintain the linearity of the output voltage relative to the target gap. The 330130 extension cable is calibrated to match the system impedance, ensuring that the Proximitor sensor can accurately resolve the -10 VDC nominal center-gap voltage. Any physical degradation, cable kinking, or improper termination in the extension path introduces capacitive loading, which shifts the scale factor from the standard 200 mV/mil (7.87 V/mm). When integrating this 8.0 meter cable, the total system loop resistance must be verified to prevent signal attenuation that would otherwise lead to inaccurate vibration amplitude readings and erroneous peak-to-peak displacement calculations.

Frequently Asked Questions

Q: Is it permissible to cut or shorten the 330130 cable to fit a specific conduit run?

A: No. The 3300 XL system is a calibrated electrical length system. Cutting or modifying the cable length alters the impedance and capacitance, which will invalidate the factory calibration and cause measurement errors in the displacement output.

Q: Can this cable be used with non-3300 XL series Proximitor sensors?

A: No. This cable is specifically designed for the 3300 XL system and is electrically incompatible with legacy 3300 5 mm/8 mm probe systems due to differing connector types and system impedance requirements.

Field Installation Guidelines

• Mechanical Integrity: Ensure the connector protectors are fully seated and tightened. The FluidLoc design prevents oil migration along the cable path, but it is effective only when the connector joints are fully sealed.
• Shielding: Do not remove the cable shield. Ensure the cable is routed in dedicated conduit or cable trays separated from high-voltage AC power lines to prevent electromagnetic interference (EMI) from inducing noise into the low-level transducer signal.
• Minimum Bend Radius: Adhere to a minimum bend radius of 25.4 mm (1.0 inch) during installation to prevent internal conductor damage and changes to the characteristic impedance.
• Termination: Use dielectric grease on the connector threads to prevent oxidation and moisture ingress in high-humidity or corrosive environments.