Product Introduction
The Bently Nevada 330709-050-120-10-02-00 3300 XL 11 mm Proximity Probes are engineered for high-reliability vibration and position monitoring in rotating machinery. These probes address common failure modes such as cross-talk interference, temperature extremes, and pressure seal degradation, ensuring accurate data in harsh industrial environments. Manufactured in the USA, this probe features a polyphenylene sulfide (PPS) tip and a 304 stainless steel case for durability. The 330709-050-120-10-02-00 is part of the proven 3300 XL series, offering precise gap measurement and low output drift.
Technical Specifications
Key parameters of the Bently Nevada 330709-050-120-10-02-00 3300 XL 11 mm Proximity Probes include:
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Unthreaded Length Option: 050 = 50 mm
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Overall Case Length Option: 120 = 120 mm
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Total Length Option: 10 = 1.0 metre (3.3 feet)
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Connector: Miniature coaxial ClickLoc connector, standard cable
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Probe dc Resistance: 5.9 ± 0.5 ohms (measured from center conductor to outer conductor)
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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, fluoroethylene propylene (FEP) insulated, available in 1, 5, or 9 meters
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Probe Case Torque (M16x1.5): Maximum 63.3 N·m, Recommended 21.1 N·m
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Connector Torque: Finger tight recommended, maximum 0.565 N·m
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Minimum Bend Radius: 25.4 mm (1.0 in)
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Thread: M16x1.5, maximum engagement 24 mm
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Temperature Range: Operating and storage -52°C to +177°C, storage -52°C to +105°C
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Relative Humidity: 100% condensing (non-submersible with protected connectors)
Industry Applications
The 330709-050-120-10-02-00 is ideal for vibration monitoring on turbines, compressors, pumps, and motors. Its cross-talk limitation recommends a minimum target flat surface diameter of 30.5 mm and shaft diameter of 152 mm. In applications requiring high-temperature tolerance, this probe operates reliably from -52°C to +177°C, preventing premature failure of the pressure seal when exposed to extreme conditions.
Installation & Setup Guidance
Mount the Bently Nevada 330709-050-120-10-02-00 using M16x1.5 threads. Apply recommended torque of 21.1 N·m (187 in·lb) for the probe case. Tighten the connector only to finger tight (max 0.565 N·m). Ensure the cable bend radius does not exceed 25.4 mm to avoid damage. For optimal performance, maintain a clean target surface and use the specified 75 Ω triaxial cable. When routing cables, avoid sharp bends and secure them to prevent vibration-induced wear.
Maintenance & Reliability
Regularly inspect the probe tip and cable for wear. The PPS tip resists chemical attack, but check for physical damage. The stainless steel case withstands corrosive environments. Test the dc resistance periodically; values outside 5.9 ± 0.5 ohms indicate cable degradation. Avoid exposing the probe to temperatures below -34°C (-30°F) as this may cause premature pressure seal failure. Relative humidity up to 100% condensing is acceptable only if connectors are protected. For pressure-sealing applications, contact UBEST Automation for custom testing options.
Selection Guide & Purchasing Advice
When ordering the 330709-050-120-10-02-00, verify the total length (1.0 m in this variant) and connector type (miniature coaxial ClickLoc). Ensure your system supports 75 Ω triaxial cabling. For longer cable runs, consider the 5 or 9 meter options. Need assistance? Contact UBEST Automation for expert guidance on matching this probe to your Bently Nevada monitoring system.