Product Overview
When machinery vibration monitoring demands exceptional accuracy and durability, the Bently Nevada 330710-000-050-90-02-05 3300 XL 11 mm Proximity Probe provides a robust solution. This industrial automation module is designed for critical rotating machinery, offering precise gap measurements and reliable performance in harsh environments. The probe features an M16x1.5 thread with armor, a 50 mm overall case length, and a 9.0 meter total cable length with a miniature coaxial ClickLoc connector. Built for long-term stability, the 330710-000-050-90-02-05 incorporates multiple agency approvals and temperature resilience from -52°C to +177°C.
Technical Specifications
| Parameter |
Value |
| Unthreaded Length |
0 mm |
| Overall Case Length |
50 mm |
| Total Length (cable) |
9.0 meters (29.5 feet) |
| Connector Type |
Miniature coaxial ClickLoc, standard cable |
| Agency Approval |
Multiple Approvals |
| Probe DC Resistance (RPROBE) |
8.5 ± 1.1 ohms at 9.0 m |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Cable Specification |
75 Ω triaxial, FEP insulated (1, 5, or 9 m) |
| Operating Temperature |
-52°C to +177°C |
| Relative Humidity |
100% condensing (non-submersible) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Probe Case Torque (max) |
63.3 N·m (560 in·lb) |
| Connector-to-connector torque (max) |
0.565 N·m (5 in·lb) |
Installation Guidelines
Proper installation of the Bently Nevada 330710-000-050-90-02-05 ensures optimal performance. For M16x1.5 probe cases, apply a recommended torque of 21.1 N·m (187 in·lb) and never exceed 63.3 N·m. The maximum thread engagement is 24 mm. When routing the cable, maintain a minimum bend radius of 25.4 mm to avoid stress. Use finger-tight torque for the connector-to-connector joint, and do not exceed 0.565 N·m. The probe is designed for non-submersible applications and should be protected from direct immersion.
Maintenance and Reliability
The 330710-000-050-90-02-05 probe is built to withstand extreme conditions. Its probe tip material (PPS) resists chemical attack, and the stainless steel case provides mechanical robustness. The cable, made of FEP-insulated triaxial 75 Ω material, maintains signal integrity over long distances. Storage temperature range is -52°C to +105°C. The probe sealing system uses a Viton O‑ring to handle differential pressure, though it is not pressure tested before shipment. Regularly inspect the cable and connector for wear, especially in high-vibration environments.
Troubleshooting Common Issues
Common issues with proximity probes include cross-talk and magnetic field interference. The 330710-000-050-90-02-05 requires a minimum flat target diameter of 30.5 mm and a shaft diameter of 152 mm to minimize cross-talk. For 60 Hz magnetic fields up to 300 Gauss, output voltage varies with gap; at 0.5 mm gap, output is 0.001 mVpp/Gauss. If probe resistance deviates more than ±1.1 ohms from 8.5 ohms at 9.0 m, check cable integrity. Avoid exposing the probe to temperatures below -34°C to prevent pressure seal failure. For detailed support, UBEST Automation (ubest101) provides genuine replacement parts and technical assistance.