Bently Nevada 330130-085-03-CN 3300 XL Standard Extension Cable

Description

Bridging critical high-frequency signals within machinery protection loops, the Bently Nevada 330130-085-03-CN serves as the vital link between a 3300 XL 8mm proximity probe and a compatible Proximitor sensor. This 8.5-meter coaxial extension cable is constructed with robust stainless steel armor and integrated connector protectors, specifically engineered to withstand harsh chemical, mechanical, and thermal conditions in industrial environments. By maintaining precise system capacitance and impedance, it ensures noise-free transmission of dynamic vibration and position signals to keep critical turbomachinery monitored and protected.

Features

• Heavy-Duty Armor: Flexible stainless steel armor outer jacket protects the inner coaxial core from hot chips, abrasive friction, and mechanical damage.
• Integrated Connector Protectors: Installed on the connectors to prevent contamination by dust, moisture, and cutting fluids, while securing the physical coaxial connection.
• Calibrated Impedance: Matched electrical length and capacitance to prevent signal reflection and ensure total accuracy across the entire frequency range.
• Gold-Plated Coaxial Interfaces: Provides reliable connection points with minimal contact resistance, minimizing signal degradation.
• Hazardous Area Approval: CN-designated option ensures conformity to specific local explosive atmosphere regulations for safe deployment in hazardous industrial zones.

Applications

• Steam and gas turbine bearing vibration and radial position monitoring.
• Centrifugal compressor shaft vibration and axial thrust measurements.
• Industrial gearboxes, pumps, and high-speed generator shaft displacement sensing.
• Machinery protection systems operating in petrochemical refineries and power generation plants.

Technical Specifications Table

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This 8.5-meter extension cable is designed to complete a 9.0-meter total system length when paired with a standard 0.5-meter proximity probe. Coupling this 8.5m cable with a 1.0m probe creates an uncalibrated 9.5m physical system, which will cause severe scale-factor errors in the Proximitor. Always ensure your total length (probe + extension cable) strictly matches the calibration profile of the Proximitor (typically calibrated for 5.0m or 9.0m systems).

Application Pitfalls & Engineering Notes

During route installation, do not bend the armored conduit beyond its minimum physical dynamic bend radius of 25.4 mm (1.0 inch). Kinking the outer stainless steel armor can deform the inner Teflon-insulated coaxial cable, altering the local characteristic impedance and creating parasitic signal reflections that manifest as false high-frequency vibration spikes on your monitoring instrumentation.

Commissioning & Wiring Tips

Prior to mating the miniature coaxial connections, thoroughly inspect the gold-plated pins for physical misalignment or oil ingress. Use a dedicated contact cleaner if contamination is observed. When tightening the connection, use a finger-tight turn plus a 1/4 turn with an appropriate connector tool to compress the internal O-ring. Never use pliers directly on the threads as it can strip the micro-coaxial connections.

Installation Guidelines