Bently Nevada 330930-045-01-05 3300 NSv Extension Cable

Description

The 330930-045-01-05 is an industrial-grade 3300 XL NSv Extension Cable manufactured by Bently Nevada (a Baker Hughes business). This specialized coaxial cable provides critical low-loss signal transmission within the 3300 XL NSv Proximity Transducer System, acting as the bridge that links a 3300 NSv eddy-current proximity probe to a 3300 XL NSv Proximitor Sensor. The NSv (Narrow Side-view) system is specifically engineered for machinery with tight installation constraints—such as centrifugal air compressors, refrigeration compressors, and process gas machinery—where restricted side clearances, narrow counterbores, or small shaft diameters (smaller than 51 mm or 2 in) prevent the deployment of standard 5mm or 8mm proximity sensor configurations.

According to the official Bently Nevada system specifications, the unarmored extension cable configuration maintains a strict technical linear mass density of 45 grams per meter (0.5 oz/ft). For this specific variant featuring a 4.5-meter (14.8 feet) physical length, the net operational cable mass calculates to exactly 202.5 grams (7.14 oz), excluding the terminal connectors. This precise weight distribution is critical for field engineers calculating cable tray load limits and strain-relief drop parameters in vertical conduit runs. Protected by a high-dielectric fluorinated ethylene propylene (FEP) outer jacket, this unarmored variant (-01 option) offers maximum mechanical routing flexibility in complex conduit systems and is factory-certified with Multiple Agency Approvals (-05 option) for seamless deployment in globally classified hazardous environments.

Features

• Complete electrical and mechanical backward compatibility with legacy Bently Nevada 3300 RAM proximity transducer systems.
• High-precision unarmored design featuring a controlled linear mass density of 45 g/m (0.5 oz/ft) for accurate weight-load routing analysis.
• Premium fluorinated ethylene propylene (FEP) outer cable jacket providing high dielectric strength and chemical resistance against corrosive industrial lubes and solvents.
• Factory-terminated, gold-plated brass ClickLoc miniature coaxial connectors that lock securely to eliminate loose connections caused by severe machine vibration.
• Specialized high-stability 75-ohm coaxial core preserving high-frequency RF signal fidelity and minimizing scale factor distortion over long terms.
• Multiple hazardous area agency certifications ensuring seamless, safe deployment across global refinery and chemical processing assets.

Applications

• Relaying critical dynamic radial vibration waveforms from narrow-clearance fluid-film bearings to centralized monitoring systems.
• Interconnecting axial thrust displacement probes located inside small-shaft industrial turbomachinery assemblies.
• Transmitting high-frequency tachometer, speed-sensing, and Keyphasor phase reference signals from restricted target areas.

Option String Breakdown

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Total Loop Matching Rule: Always pair this 4.5-meter extension cable with a compatible 0.5-meter proximity probe to achieve the exact 5.0-meter total loop system calibration length required by the 3300 XL NSv Proximitor Sensor. Mismatching system lengths (e.g., using a 4.5-meter cable in a 7.0-meter tuned proximitor loop) will severely corrupt the system's Average Scale Factor (ASF).
• Conduit Weight Strain Relief: For vertical conduit drops exceeding 3 meters, ensure the cable is supported properly. While the 4.5-meter cable weight is low (202.5 g), unsupported stretching under high thermal conditions can degrade the internal 75-ohm physical core geometry.
• Connector Weatherproofing: After locking the coaxial ClickLoc joints firmly together, slide dedicated connector protectors or apply a layer of self-fusing silicone tape over the junction points to seal against moisture ingress and prevent structural grounding shorts.
• Avoid Ground Contacts: The outer metal casing of the ClickLoc connectors must not make electrical contact with the machine casing or junction box walls. Grounding this connection introduces severe high-frequency noise loops into the low-voltage sensor circuit.
• Conduit Protection Routing: Since this is an unarmored cable variant (-01), it should be routed through dedicated protective conduit or structural trunking channels to shield it from external physical cuts, pinching, and high-voltage electromagnetic interference (EMI).