330730-080-11-00 Armored FluidLoc Cable Bently Nevada

Executive Summary

The 330730-080-11-00 is an 8.0-meter armored FluidLoc extension cable optimized for the Bently Nevada 3300 XL 11mm Series proximity transducer systems. Engineered specifically for extended-range displacement monitoring, this assembly connects 11mm eddy current probes to remote Proximitor signal processing units while preserving strict 75 Ω triaxial impedance matching.

Featuring an integrated AISI 302 stainless steel armor sleeve with an outer FEP jacket and internal FluidLoc sealing, the 330730 cable blocks fluid migration through the internal wire core while safeguarding signal lines against mechanical abrasion, heavy impact, and hazardous plant oil ingress.

Core Architecture & FluidLoc Sealing Technology

The 3300 XL 11mm Cable is constructed using high-dielectric Fluoroethylene Propylene (FEP) insulation over a 75 Ω triaxial conductor layout. Connection ends utilize gold-plated brass ClickLoc coaxial connectors that click-lock into place, eliminating connection looseness caused by machine vibration.

The patented FluidLoc internal jacket construction prevents lubricating oil, process fluids, and flammable gases from leaking out of the bearing housing cavity through the interior of the cable. The addition of AISI 302 flexible stainless steel armor enclosed within an outer FEP jacket ensures high mechanical impact resistance without sacrificing the 25.4 mm (1.0 in) minimum installation bend radius.

Technical Specifications

Configuration Breakdown & Options Tree

The ordering structure 330730-080-11-00 correlates directly to specific factory specifications:

• 330730 - 3300 XL 11mm Extension Cable Base Unit
  • 080 [Cable Length Option]: 8.0 metres (26.2 feet) total length
  • 11 [Connector and Cable Option]: Armored FluidLoc cable with FEP jacket
  • 00 [Agency Approval Option]: Standard non-certified / No agency approval required

Selection Comparison & Engineering Recommendations

Comparing length and connector protection options when configuring 3300 XL 11mm proximity systems:

Engineering Advice: Choose the 330730-080-11-00 when routing signals across large turbine skids that require an 8.0-meter cable reach to match a 9.0-meter calibrated system. For high-moisture or high-humidity enclosures where pre-installed connector boots are necessary, select the 330730-040-12-00 to benefit from integrated connector protector boots and a shorter 4.0-meter run.

Target Equipment, Applications & Diagnostic Capabilities

The 330730-080-11-00 cable assembly provides extended-range signal coupling for heavy turbomachinery installations.

Target Machinery & Application Scenarios:

• Large steam turbine thrust collar displacement and differential expansion setups.
• Hydro-generator thrust and guide bearing position tracking systems.
• Heavy industrial fan shaft position systems where 8mm probes lack sufficient linear range.
• High-pressure boiler feed pump shaft position monitoring in pressurized oil cavities.

Diagnostic Capabilities:

• Extended Axial Position Range: Supports a wide 4.0 mm (160 mils) linear measuring range for tracking large axial thermal growth.
• Fluid Loss Prevention: FluidLoc interior barrier stops oil from wicking through internal cable strands out of the machine housing.
• Interference Protection: AISI 302 stainless steel armor and FEP jacket shield high-frequency signals against electromagnetic noise and physical pinching.

Global PLC Spare HUB's Insight

Consider these critical field practices when installing the 330730-080-11-00 in industrial monitoring loops:

1. Silicone Tape vs. Connector Protectors in Turbine Oil: While self-fusing silicone tape is supplied with extension cables to protect connections, do not use silicone tape inside bearing cavities where it will be continuously exposed to turbine oil. Oil degrades silicone tape over time. Use dedicated rigid connector protectors or install junction boxes outside the oil cavity for long-term reliability.

2. Target Material Calibration Standard: 3300 XL 11mm systems ship factory-calibrated to AISI 4140 steel targets by default. If your target shaft uses alternate alloy metallurgy (such as 304/316 Stainless Steel or Inconel), the system output scale factor will shift from the standard 3.94 V/mm (100 mV/mil). Verify your shaft metallurgy prior to installation to ensure proper system calibration.

Logistics, Packaging & Warranty Terms

• Quality Protection: Backed by a full 12 Months Warranty against material defects.
• Fast Order Fulfillment: Orders process and dispatch from warehouse stock within 24 to 48 hours.
• Global Express Courier Delivery: International express shipping via FedEx, UPS, or DHL.
• Protective Packaging: Shipped coiled with plastic protective end caps fitted over the gold-plated ClickLoc connector pins.

Selection Guide & Technical FAQ

Selection Guide: What distinguishes the 3300 XL 11mm system cable from standard 8mm extension cables?

11mm extension cables are tuned to match the higher inductance of the larger 11mm probe tip, providing a broader 4.0 mm linear measurement range compared to the 2.0 mm range of standard 8mm probes.

How does the FluidLoc cable feature prevent oil leaks in high-pressure bearing sumps?

FluidLoc cables contain an internal continuous seal along the cable interior that prevents oil and fluids from wicking through the outer jacket or braid strands, stopping leaks from exiting the machine cavity.

What field wiring specifications are required between the Proximitor Sensor and monitor rack?

Use 3-conductor shielded triad cable (0.2 to 1.5 mm² / 16 to 24 AWG). Keep field wiring runs under 305 meters (1,000 feet) to prevent high-frequency signal attenuation.

What is the recommended mechanical gap voltage for an 11mm probe installation?

Set the physical gap to 2.5 mm (100 mils), which corresponds to a baseline mid-range output reading of approximately -9 Vdc on the 3300 XL Proximitor sensor.

Can I modify an 8.0-meter extension cable length in the field if it is too long for my skid conduit?

No. Never cut or alter extension cables. The total system length (cable plus probe lead) must strictly match the Proximitor sensor calibration (e.g., 9.0 meters total) to preserve signal scale factor accuracy.

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