Product Overview
When pressure seal failures or extreme temperatures threaten vibration monitoring reliability, the Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probes provide a robust solution. Designed for critical machinery protection, this probe delivers accurate displacement measurements in harsh industrial environments. The 330707-00-62-90-01-05 features a Polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case, ensuring durability and chemical resistance. With a 9.0 meter total length and a 5/8-18 UNF thread, it integrates seamlessly into 3300 XL monitoring systems.
Technical Specifications
Key parameters of the Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probe include:
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel (SST)
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Probe Cable: 75 Ω triaxial, FEP insulated, 9.0 meters
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Operating and Storage Temperature: -51°C to +177°C (-60°F to +351°F)
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Probe Pressure Seal: Viton O-ring design (not pressure tested prior to shipment)
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Probe Case Thread: 5/8-18 UNF
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Maximum Length of Thread Engagement: 0.938 inches
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Recommended Probe Case Torque: 15.2 N·m (133 in·lb)
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Shipping Weight: 0.17 kg
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Connector: Miniature coaxial ClickLoc with connector protector
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Probe DC Resistance (9.0m length): 8.5 ± 1.1 ohms
Real-World Applications
The Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probe excels in vibration monitoring for rotating machinery such as steam turbines, compressors, and pumps. Its wide temperature tolerance (-51°C to +177°C) supports use in both cold climate and high-heat process areas. The PPS tip resists wear from debris, while the stainless steel case withstands corrosive atmospheres. In power generation, this probe helps detect shaft radial vibration and thrust position, enabling predictive maintenance and reducing unplanned downtime.
Installation and Setup Guidance
Proper installation is critical. For the Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probe, ensure the 5/8-18 thread engages at most 0.938 inches. Apply recommended torque of 15.2 N·m (133 in·lb) — do not exceed 45.2 N·m (400 in·lb). Use finger-tight torque for the ClickLoc connector (maximum 0.565 N·m). The minimum bend radius for the cable is 25.4 mm (1.0 inch). Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The cable maintains 75 Ω characteristic impedance; ensure proper grounding per Bently Nevada guidelines.
Maintenance and Reliability
The Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probe's reliability stems from its robust materials and seal design. The Viton O-ring seals against differential pressure, but regular inspection is recommended—especially if the probe experiences thermal cycling. Operating within -51°C to +177°C preserves the seal and cable jacket. For long-term service, verify that the PPS tip remains free of cracks or chemical attack. The stainless steel case resists most industrial fluids. No periodic recalibration is required under normal conditions.
Troubleshooting Common Issues
If the Bently Nevada 330707-00-62-90-01-05 3300 XL 11 mm Proximity Probe shows erratic readings, check the connector torque and cable bends. Exceeding the maximum bend radius (25.4 mm) can damage the internal conductor. For pressure seal failures, review temperature history: sustained operation below -34°C (-30°F) may degrade the O-ring. Resistance measurements should match 8.5 ± 1.1 ohms. If the probe has been subjected to excessive torque (above 45.2 N·m), the case threads may be compromised. Always validate the probe's DC resistance before installation.