Product Introduction
When seal integrity and temperature extremes threaten measurement accuracy, the Bently Nevada 330707-00-62-50-02-00 3300 XL 11 mm Proximity Probe delivers reliable performance. This probe is engineered for precise vibration and position monitoring in critical rotating machinery. The 330707-00-62-50-02-00 features a polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case, with a 5.0-meter total length and miniature coaxial ClickLoc connector.
Technical Specifications
The Bently Nevada 330707-00-62-50-02-00 is built to demanding standards. Key parameters include:
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Probe Length: 5.0 meters (16.4 feet)
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Thread: 1/2-20 UNF with optional M16x1.5
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Tip Material: Polyphenylene sulfide (PPS)
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Case Material: AISI 304 stainless steel
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Operating Temperature: -52°C to +177°C
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Probe Resistance: 7.2 ± 0.8 ohms
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Connector: Miniature coaxial ClickLoc
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Shipping Weight: 0.17 kg
These specifications ensure the probe withstands harsh industrial environments and provides consistent output.
Failure Mode Analysis – Pressure Seal and Temperature
A common failure mode in proximity probes is loss of pressure seal integrity. The Bently Nevada 330707-00-62-50-02-00 addresses this through a Viton O-ring design that seals differential pressure between tip and case. Note that exposing the probe to temperatures below -34°C may cause premature seal failure. To prevent this, adhere to the specified installation and operating limits. The robust case and cable construction reduce risk of damage from vibration or chemical exposure.
Industry Applications
The 330707-00-62-50-02-00 is ideal for monitoring radial vibration and axial position in steam turbines, centrifugal compressors, and large pumps. Its 5.0-meter cable length and 1/2-20 thread suit standard mounting configurations in API 670 machinery. In high-temperature zones like turbine bearing housings, the probe's -52°C to +177°C range ensures reliable data collection without drift.
Installation & Setup Guidance
Proper installation is critical for accurate measurement. For the Bently Nevada 330707-00-62-50-02-00, follow these guidelines:
- Thread engagement maximum: 0.750 in (19 mm) for 1/2-20 UNC
- Probe case torque: 45.2 N·m maximum, recommended 15.2 N·m
- Connector-to-connector torque: finger tight, maximum 0.565 N·m
- Minimum bend radius: 25.4 mm (1.0 in)
- Use only with 5-meter Proximitor sensor for correct calibration
Ensure the probe tip is clean and the case is free of burrs before insertion. Avoid over-tightening to prevent thread damage or seal distortion.
Maintenance & Reliability
Regular inspection of the probe cable and connector for abrasion or chemical attack extends service life. The FEP-insulated triaxial cable resists high temperatures and many industrial fluids. Confirm that the pressure seal remains intact by visual check after any thermal cycle near the lower temperature limit. UBEST Automation recommends storing spare probes in a clean, dry environment between -52°C and +177°C.
Selection Guide & Purchasing Advice
Before ordering the 330707-00-62-50-02-00, verify the mounting thread (1/2-20 or M16x1.5), total length requirement, and connector type (ClickLoc). This probe is designed exclusively for 5-meter Proximitor sensors. For custom pressure testing or different cable lengths, contact UBEST Automation for assistance. We stock genuine Bently Nevada parts to ensure compatibility and long-term reliability.