Bently Nevada 330709-000-070-50-02-00 3300 XL Probe for Turbine Monitoring

Description

Product Description

• The Bently Nevada 330709-000-070-50-02-00 is a robust proximity probe.
• It is part of the 3300 XL 11 mm series.
• The probe measures shaft vibration, position, and phase.
• It uses a five meter triaxial cable for stable signals.
• The case is M16×1.5 stainless steel for strong mounting.
• The probe tip is Polyphenylene sulfide for heat resistance.
• This probe works with five meter Proximitor Sensors only.

Technical Specifications

• Brand: Bently Nevada
• Model: 330709-000-070-50-02-00
• Series: 3300 XL 11 mm Proximity Probes
• Core Measurement Capability
  • Detects shaft rub events.
  • Measures rotor unbalance.
  • Provides phase-trigger readings.
• Mechanical
  • Case thread: M16×1.5.
  • Max thread engagement: 24 mm.
  • Overall case length: 70 mm.
  • Unthreaded length: 0 mm.
  • Tip material: PPS.
  • Case material: AISI 304 SST.
• Electrical
  • Cable: 75 Ω triaxial, FEP insulated.
  • Total length: 5.0 m.
  • DC resistance: 7.2 ± 0.8 Ω.
  • Connector: Miniature coaxial ClickLoc.
• Performance
  • Minimum target width: 30.5 mm.
  • Minimum shaft diameter: 152 mm.
  • Minimum bend radius: 25.4 mm.
• Environment
  • Operating range: -52°C to +177°C.
  • Avoid long exposure below -34°C.
  • Resists oil, heat, and vibration.
• Torque
  • Probe case torque per size group: 63.3 N·m and 21.1 N·m.
  • Connector torque: finger tight recommended.
  • Max connector torque: 0.565 N·m.
• Compatibility
  • Works with five meter 3300 XL Proximitor Sensors only.
  • Fits M16×1.5 sensor ports.
  • Supports standard Bently Nevada monitoring racks.
• Certification
  • Agency approval option: 00 (not required).
  • Meets Bently Nevada quality standards.
• Package Contents
  • 1 × 330709-000-070-50-02-00 Proximity Probe.
  • Factory test sheet.
  • Protective shipping sleeve.
• Warranty and Shipping
  • Warranty: 12 months.
  • Shipping options: FedEx, UPS, DHL.

Installation Guide

• Clean the mounting surface first.
• Apply correct case torque to avoid damage.
• Keep cable bends above 25.4 mm radius.
• Handle connectors finger tight for best seal.
• Verify gap voltage during setup.

Commissioning and Maintenance

• Inspect cable annually for wear.
• Check probe tip for deposits after outages.
• Keep connectors dry before powering up.
• Replace probe if the DC resistance is out of range.

Diagnostic Capabilities

• Detects shaft rub and misalignment early.
• Identifies rotor unbalance quickly.
• Enables precise phase measurement for balance work.
• Improves reliability planning and root-cause analysis.

Typical Applications

• Gas turbines.
• Steam turbines.
• Large compressors and pumps.
• High-value rotating equipment in petrochemical plants.

FAQ

• Can I use this probe with a 9-meter system?
  • No. This probe fits only five meter Proximitor Sensors.
• How do I avoid signal drops?
  • Keep connectors dry and torque them correctly.
• Will EMI affect readings?
  • The triaxial cable reduces interference in high-noise plants.
• How often check the probe gap?
  • Check the gap after each major shutdown.
• Does high heat shorten probe life?
  • Yes. Avoid continuous operation above 177°C.
• Will tight bends hurt accuracy?
  • Yes. Maintain the minimum bend radius of 25.4 mm.

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