Introduction to the Bently Nevada 3300 XL 8 mm Proximity Probe

The Bently Nevada 3300 XL 8mm Probe offers reliable displacement and vibration measurement for industrial machinery. This metric probe provides accurate data to protect critical assets like turbines, compressors, and pumps from unexpected failure. Its robust design ensures stable performance in demanding environments. We will detail its complete specifications and application guidelines below.

Product Model & Complete Configuration

• Brand: Bently Nevada
• Product Type: 3300 XL 8 mm Proximity Probes (Metric)
• Base Model: 330104 - 3300 XL 8 mm Probe, M10x1 thread, with armored cable.
• Full Part Number & Suffix Breakdown: 330104-00-07-05-01-05
  • -00: Unthreaded Length = 0 mm
  • -07: Overall Case Length = 70 mm
  • -05: Total Cable Length = 0.5 meter (1.6 feet)
  • -01: Connector = Miniature coaxial ClickLoc with protector
  • -05: Agency Approvals = CSA, ATEX, IECEx

Key Technical Specifications

• Linear Measurement Range: 2 mm (80 mils), from 0.25 to 2.3 mm from target.
• Recommended Gap (Radial Vibration): 1.27 mm (50 mils), corresponding to -9 Vdc output.
• Electrical Specifications:
  • Nominal Probe DC Resistance (RPROBE): 7.45 Ω ± 0.50 Ω for 0.5m cable.
  • Output Signal: Approximately -1 to -17 Vdc over the linear range.
• Mechanical Construction:
  • Probe Tip: Polyphenylene sulfide (PPS) material.
  • Probe Case: AISI 303/304 Stainless Steel, M10x1 thread.
  • Maximum Thread Engagement: 15 mm.
  • Sealing: Viton® O-ring for differential pressure sealing.
• Torque Specifications:
  • Recommended Installation Torque: 11.2 N•m (100 in•lbf).
  • Maximum Rated Torque: 33.9 N•m (300 in•lbf).
• Environmental Ratings:
  • Standard Operating Temperature: -52°C to +177°C (-62°F to +350°F).
  • Extended Cable/Connector Temperature: Up to +260°C (+500°F).
  • Relative Humidity: Less than 3% ASF change at 93% humidity.
• Field Wiring & Compatibility:
  • Cable Gauge: 0.2 to 1.5 mm² (24 to 16 AWG). Use shielded triad cable.
  • Maximum Cable Run: 305 meters (1,000 feet) to the Proximitor.
• Certifications & Safety:
  • The 330104-00-07-05-01-05 model holds CSA, ATEX, and IECEx approvals.
  • It is suitable for installation in hazardous areas with proper intrinsic safety (ia) or non-incendive (nA, ec) barriers.

Installation & Application Guide

• Always set the probe gap to achieve the recommended -9 Vdc for radial vibration monitoring. This equates to about 1.27 mm from the target.
• Use a calibrated torque wrench to tighten the probe. Do not exceed the maximum torque of 33.9 N•m to avoid damage.
• Ensure the target area is clean, conductive, and larger than the probe tip for accurate readings.
• For pressure-sealed applications, contact Bently Nevada's custom design department for specific testing requirements.
• When routing field wiring, keep it away from strong sources of electromagnetic interference. Use the recommended shielded cable.

Frequently Asked Questions (FAQ)

• What is the difference between standard and extended temperature probes? The standard probe covers up to 177°C, while the extended version supports higher cable/connector temperatures up to 260°C.
• Can I use this probe with any 3300 XL monitor? Yes, the 3300 XL 8mm Probe is compatible with 3300 XL Proximitor Sensors, with a max cable run of 305 meters.
• What does the suffix '-05' for agency approval mean? It confirms the probe has CSA, ATEX, and IECEx certifications for use in regulated hazardous locations.
• How do I ensure a proper pressure seal? The probe uses a Viton O-ring. For critical pressure applications, discuss testing with Bently Nevada's custom department.

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