330702-00-30-50-11-05 Bently Nevada 3300 XL 11mm Proximity Probe

Global PLC Spare HUB's Insight: Heavy-Duty Axial Monitoring

• The Bently Nevada 330702-00-30-50-11-05 is a high-performance 11mm proximity sensor for large turbomachinery.
• Its 11mm tip provides a broader linear range compared to 8mm models, ideal for high-displacement shaft monitoring.
• Equipped with FluidLoc technology, this probe prevents oil wicking through the cable jacket into control areas.
• The ClickLoc connector with protector ensures a moisture-proof, vibration-resistant signal connection.
• Engineers specify the -05 Multiple Approval version for seamless integration into global hazardous zone projects.

Configuration & Suffix Breakdown (Logic Tree)

• 330702 — 3300 XL 11 mm Probe (1/2-20 UNF threaded with SST armor)
  • -00 — Unthreaded Length: 0.0 inches (Fully threaded case).
  • -30 — Overall Case Length: 3.0 inches.
  • -50 — Total Length: 5.0 Meters (16.4 Feet).
  • -11 — Connector/Cable: Miniature ClickLoc with Protector + FluidLoc Cable.
  • -05 — Agency Approval: Multiple Approvals (ATEX, IECEx, CSA).

Technical Engineering Specifications

• Probe Tip Material: Polyphenylene sulfide (PPS) high-stability polymer.
• Case Construction: AISI 304 Stainless Steel (SST).
• Cable Specification: 75 Ω triaxial, FEP insulated with FluidLoc internal seal.
• DC Resistance: Nominal 7.2 Ω ± 0.8 Ω (Center to Outer Conductor).
• Temp Range: -52°C to +177°C (Seal integrity requires Ta > -34°C).
• Operational Torque: 15.2 N•m (Recommended) / 45.2 N•m (Maximum).
• Minimum Bend Radius: 25.4 mm (1.0 inch).

Strategic Selection & Technical Comparison

Compare the 3.0-inch case configuration with other 11mm variants to ensure housing compatibility:

Technical Suggestion: The -50 total length option is factory-tuned for a 5-meter Proximitor. If replacing a 9-meter system, you must use the [-90] variant to maintain the 100 mV/mil scale factor.

Diagnostic Capabilities & Industrial Applications

• Machinery Fit: Critical for Hydro-turbines, large Steam Turbines, and centrifugal Gas Compressors.
• Axial Position: Optimized for shaft thrust measurement where movement exceeds 2.0mm.
• Leak Prevention: FluidLoc cable acts as a primary barrier against pressurized oil migrating through the conduit.
• Field Diagnostics: Resistance verification (7.2 Ω) allows technicians to confirm probe health without removing it from the machine.

Logistics & Warranty Commitment

• Warranty: 12-month factory warranty for all New & Original Bently Nevada sensors.
• Condition: Guaranteed Original Factory Packing, Made in U.S.A.
• Courier: Fast global delivery via FedEx, UPS, and DHL.
• Dispatch Window: This 330702-00-30-50-11-05 ships within 24-48 hours.

Expert FAQ & Procurement Guide

• Why is the Connector Protector (-11) necessary for 11mm probes?
• 11mm probes are often used in high-oil environments. The protector prevents fluids from infiltrating the coaxial connection, which would otherwise cause signal drift.
• Can I use a 3300 XL 11mm probe with a standard 3300 XL 8mm Proximitor?
• No. The 11mm probe has a different electrical footprint. It must be paired with an 11mm-specific Proximitor to ensure accurate vibration readings.
• What happens if the FluidLoc cable is bent too sharply?
• The minimum bend radius is 25.4 mm (1.0 inch). Bending beyond this can damage the triaxial shielding and compromise the internal FluidLoc seal.
• Is the O-ring seal pressure tested at the factory?
• Bently Nevada designs the Viton O-ring for high-pressure sealing, but individual probes are not pressure tested unless specifically requested via a custom order.
• Selection Tip: Thread Engagement
• With a 3.0-inch case and 0.0 unthreaded length, the maximum thread engagement is 0.750 inches. Ensure your mounting bracket thickness accommodates this depth.

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