Bently Nevada 330854-040-24-05 3300 XL 25 mm Extension Cable

Configured for signal transmission between 25 mm proximity probes and Proximitor sensors in machinery health monitoring systems, the Bently Nevada 330854-040-24-05 (330854 Extension Cable) provides direct physical/electrical execution.

Hardware Specifications

Mechanical Monitoring and TSI Characteristics

The 330854 extension cable maintains the system impedance requirements for the 3300 XL transducer loop, ensuring accurate signal propagation. System performance is validated by observing gap voltage targets, typically -10 VDC at the Proximitor output, which confirms the probe is correctly positioned within its linear range for rotor dynamics acquisition. To prevent signal distortion, cross-talk suppression must be implemented by maintaining adequate spatial separation between the extension cable and high-energy power conduits. Any disruption to the cable shield or dielectric will introduce electrical noise, compromising the integrity of displacement measurements.

Frequently Asked Questions

Q: Is it permissible to modify the 4.0 m length of this extension cable in the field?

A: No. The transducer system is factory-calibrated as a matched set, including the probe, extension cable, and Proximitor. Modifying the cable length alters the electrical impedance, which degrades the frequency response and linearity of the displacement signal.

Q: How does the FluidLoc cable construction affect installation?

A: The FluidLoc construction is integrated into the cable design to prevent fluid migration along the internal conductors. This requires that the cable be handled without sharp bending, maintaining a minimum bend radius of 25.4 mm (1.0 in) to preserve the internal seal and shielding integrity.

Field Installation Guidelines

• Connector Engagement: Use ClickLoc connectors for mating. Tighten only by hand until the locking mechanism is fully seated; do not apply mechanical torque using tools, as this may damage the connector threads or O-ring seals.
• Cable Routing: Secure the cable at regular intervals using non-metallic clamps to prevent mechanical fatigue caused by machine-induced vibration.
• Shielding: Ensure the cable shield remains continuous from the probe to the Proximitor terminal. Terminate the shield at the ground reference provided by the monitoring system to mitigate common-mode noise.
• Environmental Protection: While the FluidLoc cable is designed for challenging industrial environments, ensure the connector junctions are protected from direct exposure to corrosive fluids or high-pressure sprays.