Product Introduction
When cross-talk and magnetic interference threaten the accuracy of vibration monitoring, the Bently Nevada 330709-000-120-10-02-00 delivers reliable performance. This 3300 XL 11 mm Proximity Probe is designed for non-contact measurement of shaft displacement and vibration in rotating machinery. Built with a Polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case, it withstands harsh industrial environments.
Technical Specifications Breakdown
The Bently Nevada 330709-000-120-10-02-00 offers a total probe length of 1.0 meter (3.3 feet) with a miniature coaxial ClickLoc connector and standard cable. Key parameters include:
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Probe dc Resistance: 5.9 ± 0.5 ohms (center to outer conductor)
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Temperature Range: Operating and storage from -52°C to +177°C (-62°F to +351°F); storage only from -52°C to +105°C
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Probe Case Torque: Maximum rated 63.3 N·m (560 in·lb), recommended 21.1 N·m (187 in·lb)
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Connector Torque: Recommended finger tight, maximum 0.565 N·m (5 in·lb)
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Minimum Bend Radius: 25.4 mm (1.0 in) with or without SST armor
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Thread: M16 x 1.5, maximum engagement length 24 mm
These specifications ensure precise, repeatable measurements under demanding conditions.
Industry Applications
The Bently Nevada 330709-000-120-10-02-00 excels in vibration monitoring for turbines, compressors, pumps, and motors. Its cross-talk limitation requires a minimum shaft diameter of 152 mm (6.0 in) and a flat target surface diameter of 30.5 mm (1.2 in). This makes it ideal for large rotating assemblies where accurate gap measurement is critical.
Installation & Setup Guidance
Mount the Bently Nevada 330709-000-120-10-02-00 securely using the M16 x 1.5 thread. Apply recommended torque of 21.1 N·m to the probe case; do not exceed 63.3 N·m. Tighten the connector finger tight only—maximum torque is 0.565 N·m. Maintain a minimum bend radius of 25.4 mm on the cable to avoid damage. For best results, ensure the target surface is flat and at least 30.5 mm in diameter.
Maintenance & Reliability
The Bently Nevada 330709-000-120-10-02-00 operates reliably in 100% condensing humidity (non-submersible) when connectors are protected. Temperature extremes from -52°C to +177°C are acceptable, but exposure below -34°C may stress the pressure seal. The Viton O-ring seals differential pressure; contact custom design for pressure testing if required. Regular inspection of the cable and connector ensures long service life.
Troubleshooting & Common Issues
Cross-talk can degrade accuracy. Use a minimum shaft diameter of 152 mm to minimize interference. The 60 Hz magnetic field effect varies with gap: at 0.5 mm gap, output is 0.001 mil pp/gauss; at 2.5 mm, 0.009; at 4.6 mm, 0.027. Keep gaps within recommended ranges. If erratic readings occur, verify connector torque and cable integrity. For probe resistance, measure between center and outer conductor—expected value is 5.9 ± 0.5 ohms for the 1.0 m length.