Bently Nevada 330195-02-12-90-CN 3300 XL 8 mm Extension Cable

Description

Optimized for demanding machinery protection applications, the Bently Nevada 330195-02-12-90-CN functions as a high-performance 3300 XL 8 mm Extension Cable within the standard eddy current transducer system. This cable bridges the physical distance between the proximity probe and the Proximitor sensor, ensuring precise capacitive and inductive matching necessary for accurate vibration and shaft position measurements. Featuring FluidLoc technology and an integrated connector protector, this model is specifically engineered to resist process fluid migration and mechanical stress in harsh industrial environments, while carrying the necessary regional certification approvals.

Features

• FluidLoc Cable Design: Prevents the leakage of oil, water, or other process fluids through the inner core of the coaxial cable.
• Connector Protector: Provides robust mechanical shielding and environmental sealing at the critical probe-to-extension-cable junction.
• Precision Coaxial Shielding: Minimizes electromagnetic interference (EMI) and radio frequency interference (RFI) to maintain signal integrity over the entire length.
• High Temperature Stability: Constructed with materials designed to withstand extreme temperature fluctuations within industrial casings.
• Certified Design: Designed with the CN option, meeting regional compliance and hazardous area standards.

Applications

• Steam and gas turbine shaft vibration and axial displacement monitoring.
• Centrifugal compressor and high-pressure pump shaft dynamic motion analysis.
• Hydroelectric generator thrust collar and guide bearing monitoring.
• Heavy industrial gearbox shaft thrust and radial position tracking.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility: The 330195-02-12-90-CN is strictly calibrated for 9.0-meter system configurations. It cannot be combined with a 5.0-meter Proximitor sensor or 5.0-meter probe configurations. Mismatching system lengths alters the total electrical capacitance of the sensor loop, leading to severe measurement non-linearity, gain errors, and invalid machinery protection alarms.

Application Pitfalls & Engineering Notes: When routing the extension cable, mechanical protection is paramount. Maintain a minimum bend radius of 25.4 mm (1.0 inch). Kinking or flattening the cable distorts the coaxial spacing between the center conductor and the outer shield, changing the characteristic impedance from 75 ohms and introducing high-frequency noise spikes that can be misidentified as machine vibration.

Commissioning & Wiring Tips: Ensure that the miniature coaxial connectors are completely clean and dry before mating. Moisture or particulate ingress inside the connector creates a high-resistance parallel path to ground, generating a drift in the gap voltage and triggering sensor fault codes in the 3500 rack. The FluidLoc and connector protector features must be correctly engaged and sealed during the final layout.

Installation Guidelines