Product Introduction
In demanding industrial environments, reliable vibration monitoring is critical for preventing unplanned downtime. The Bently Nevada 330709-000-030-90-01-00 3300 XL 11 mm Proximity Probe delivers precise shaft displacement measurements for rotating machinery. This probe, manufactured in the U.S.A., is part of the proven 3300 XL series and is designed for long-term performance in harsh conditions.
Technical Specifications
The Bently Nevada 330709-000-030-90-01-00 includes a 9.0 meter (29.5 feet) total cable length with a miniature coaxial ClickLoc connector and connector protector. Below are key specifications from the product data:
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Probe DC Resistance: 8.5 ± 1.1 ohms (center conductor to outer conductor at 9.0m)
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Cross-talk Limitation: Minimum target flat surface diameter 30.5 mm (1.2 in); minimum shaft diameter 152 mm (6.0 in)
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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
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Thread Size: M16 x 1.5; maximum thread engagement 24 mm
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Recommended Probe Case Torque: 21.1 N·m (187 in·lb); maximum rated 63.3 N·m (560 in·lb)
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Connector-to-Connector Torque: Finger tight (max 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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Operating & Storage Temperature: -52°C to +177°C (-62°F to +351°F)
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Temperature Classifications: Refer to full datasheet for EPL Ga, Gc, Dc schedules
Installation & Setup Guidance
Proper installation of the Bently Nevada 330709-000-030-90-01-00 ensures accurate readings. The M16 x 1.5 threaded case requires a mounting hole with the recommended torque of 21.1 N·m. Avoid exceeding the maximum torque of 63.3 N·m to prevent damage. When connecting the miniature coaxial ClickLoc connector, tighten only finger tight (maximum 0.565 N·m). Maintain a minimum bend radius of 25.4 mm for the cable to avoid internal breaks. For optimal performance, ensure the target surface meets the cross-talk limitations: flat surface diameter at least 30.5 mm and shaft diameter at least 152 mm.
Troubleshooting & Common Issues
Common issues with proximity probes include cross-talk from adjacent probes and temperature-related seal failure. The Bently Nevada 330709-000-030-90-01-00 addresses these with specified cross-talk limits and a wide temperature range. If readings drift, verify that the probe resistance measures 8.5 ± 1.1 ohms between center conductor and outer conductor. Exposing the probe to temperatures below -34°C (-30°F) may cause premature pressure seal failure. Always use the recommended torque values to avoid thread damage.
Selection Guide & Purchasing Advice
When selecting the Bently Nevada 330709-000-030-90-01-00, verify that the total cable length (9.0m) suits your installation distance. The probe includes a 0 mm unthreaded length and a 30 mm overall case length. This model does not include armor; for armored versions, refer to other part numbers. For additional technical details or assistance, contact UBEST Automation for expert support and fast delivery of genuine Bently Nevada parts.