Product Introduction
When precise vibration monitoring is critical for rotating machinery, the Bently Nevada 330709-000-070-50-01-00 3300 XL 11 mm Proximity Probe delivers accurate, non-contact displacement measurements. Part of the proven 3300 XL series, this probe is engineered for harsh industrial environments where sensor failure leads to costly downtime. With a 5.0-meter cable length and M16 x 1.5 thread, the 330709-000-070-50-01-00 provides reliable data for predictive maintenance programs.
Technical Specifications
The Bently Nevada 330709-000-070-50-01-00 incorporates key design parameters that ensure consistent performance:
| Parameter |
Value |
| Probe dc Resistance (5.0m length) |
7.2 ± 0.8 ohms |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Cable Specification |
75 Ω triaxial, FEP insulated |
| Operating Temperature Range |
-52°C to +177°C (-62°F to +351°F) |
| Thread Size |
M16 x 1.5 |
| Maximum Thread Engagement |
24 mm |
| Recommended Probe Case Torque |
21.1 N•m (187 in•lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
These specifications reflect the careful engineering behind the 330709-000-070-50-01-00, ensuring compatibility with standard monitoring systems and long service life.
Industry Applications
The 330709-000-070-50-01-00 excels in applications requiring continuous vibration monitoring of critical assets such as steam turbines, centrifugal compressors, and large pumps. In a refining environment, the probe's -52°C to +177°C temperature range allows operation in both cold winter conditions and near hot process pipes. The miniature coaxial ClickLoc connector with connector protector resists loosening from vibration, reducing false alarms and unplanned shutdowns.
Installation & Setup Guidance
For reliable measurements, mount the Bently Nevada 330709-000-070-50-01-00 probe with a recommended torque of 21.1 N•m (187 in•lb) on the probe case. The M16 x 1.5 thread engages up to 24 mm. Use only finger-tight torque on the connector (0.565 N•m max). Ensure the target shaft diameter is at least 152 mm (6.0 in) and the flat surface diameter a minimum of 30.5 mm (1.2 in) to meet cross-talk limitations. Keep cable bends above 25.4 mm (1.0 in) to avoid internal damage.
Maintenance & Reliability
Routine inspection of the probe cable and connector is essential. The 75 Ω triaxial FEP cable resists chemicals and high temperatures, but verify no cuts or kinks. Exposing the probe below -34°C (-30°F) may stress the pressure seal, so avoid rapid temperature swings. The stainless steel case withstands corrosion, making the 330709-000-070-50-01-00 suitable for offshore and chemical plant use. Periodic resistance checks (7.2 ± 0.8 ohms) confirm cable integrity.
Selection Guide & Purchasing Advice
Before purchasing, verify that your system uses a five-meter Proximitor sensor, as the 5.0m cable length of the 330709-000-070-50-01-00 is designed specifically for that interface. Also confirm thread compatibility: M16 x 1.5 is common in many installations. For replacement of older probes, the 3300 XL series offers improved reliability and consistent output. UBEST Automation stocks genuine Bently Nevada 330709-000-070-50-01-00 probes ready for quick shipment. Contact us for bulk pricing or expedited delivery.