Product Introduction
The Bently Nevada 330709-000-030-10-11-00 is a 3300 XL 11 mm proximity probe engineered for accurate vibration and position measurement in critical rotating machinery. This probe addresses common failure modes such as crosstalk and temperature-induced drift by incorporating a robust design with precise electrical characteristics. With a 30 mm overall case length and 1.0 meter cable, it provides reliable performance in demanding industrial environments.
Technical Specifications
| Parameter |
Value |
| Probe DC Resistance (1.0m) |
5.9 ± 0.5 ohms |
| Cross-talk Limitation (Target Diameter) |
Minimum 30.5 mm (1.2 in) |
| Cross-talk Limitation (Shaft Diameter) |
Minimum 152 mm (6.0 in) |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 Stainless Steel |
| Probe Cable Specification |
75 Ω triaxial, FEP insulated, 1 m total length |
| Probe Case Thread |
M16 x 1.5 |
| Max Thread Engagement Length |
24 mm |
| Recommended Case Torque |
21.1 N·m (187 in·lb) |
| Maximum Case Torque |
63.3 N·m (560 in·lb) |
| Connector Torque (Max) |
0.565 N·m (5 in·lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Operating/Storage Temperature |
-52°C to +177°C |
These specifications ensure the 330709-000-030-10-11-00 maintains signal integrity and mechanical stability even under extreme conditions, reducing the risk of measurement errors that often plague inferior probes.
Industry Applications
The Bently Nevada 330709-000-030-10-11-00 excels in turbomachinery monitoring, compressor protection, and pump vibration analysis. For example, in steam turbines where shaft vibration can exceed safe limits, this probe's precise resistance and wide temperature tolerance prevent false alarms and unplanned shutdowns. Its cross-talk limitation makes it suitable for close-proximity mounting on smaller shaft diameters, a common source of interference in retrofit applications.
Installation & Setup Guidance
Proper installation of the 330709-000-030-10-11-00 is critical to avoid failure modes like connector damage or seal leaks. Use the recommended case torque of 21.1 N·m (187 in·lb) for the M16x1.5 thread; exceeding 63.3 N·m risks stripping. Tighten the connector only finger tight (max 0.565 N·m) to avoid crushing the coaxial ClickLoc connector. Ensure the cable bend radius never falls below 25.4 mm to maintain impedance consistency.
Maintenance & Reliability
Regular inspection of the probe tip and cable connector prevents common issues like fluid ingress or electrical drift. The 330709-000-030-10-11-00 includes a FluidLoc cable and connector protector, but avoid exposing to temperatures below -34°C, which can cause premature seal failure. For explosive environments, refer to the temperature schedule: for EPL Ga/Gc, T1 classification allows ambient up to 232°C, while T5 limits to 40°C. Adhering to these schedules extends probe life and reduces replacement costs.
Selection Guide & Purchasing Advice
Before ordering a replacement or new installation, verify the thread type (M16x1.5), unthreaded length (0 mm), and total cable length (1.0 m) match your application. The 330709-000-030-10-11-00 uses a miniature coaxial ClickLoc connector; ensure your extension cable or monitor is compatible. For genuine spares and quick delivery, UBEST Automation (ubest101) stocks this exact model for industrial uptime.