Product Overview
The Bently Nevada 330709-000-040-50-12-00 is a 3300 XL 11 mm proximity probe designed for precise vibration and position measurement in rotating machinery. This model features an M16x1.5 thread, a 40 mm overall case length, and a 5.0 meter total length with a miniature coaxial ClickLoc connector and FluidLoc cable. Engineered to minimize cross-talk and withstand extreme temperatures from -52°C to +177°C, the 330709-000-040-50-12-00 ensures reliable performance in demanding industrial environments.
Technical Specifications
| Parameter |
Value |
| Probe Type |
3300 XL 11 mm, without armor |
| Thread |
M16 x 1.5 |
| Total Length |
5.0 meters (16.4 feet) |
| Connector |
Miniature coaxial ClickLoc with FluidLoc cable |
| Probe dc Resistance (RPROBE) |
7.2 ± 0.8 ohms (at 5.0 m) |
| Cross-talk Limit: Target Minimum |
30.5 mm (1.2 in) flat surface diameter |
| Cross-talk Limit: Shaft Minimum |
152 mm (6.0 in) diameter |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Cable Spec |
75 Ω triaxial, FEP insulated |
| Probe Case Torque (Recommended) |
21.1 N·m (187 in·lb) |
| Maximum Thread Engagement |
24 mm |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Operating/Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Temperature Classification (EPL Ga/Gc) |
T1 to T5 per schedule |
These specifications ensure the 330709-000-040-50-12-00 offers precise and stable readings even in harsh conditions. The low cross-talk design allows reliable operation near large shafts, while the PPS tip resists high temperatures.
Industry Applications
The Bently Nevada 330709-000-040-50-12-00 is ideal for turbine, compressor, and pump vibration monitoring. In steam turbine applications, its wide temperature range accommodates heat near bearing housings. The probe’s cross-talk immunity suits close-coupled installations where multiple probes are mounted near large rotors. For generator set monitoring, the 5.0 meter cable reaches control panels without signal degradation.
Installation & Setup Guidance
Install the Bently Nevada 330709-000-040-50-12-00 to a mounting hole tapped M16x1.5. Apply recommended torque of 21.1 N·m to the probe case. Ensure thread engagement does not exceed 24 mm. The connector should be finger-tight; maximum torque is 0.565 N·m (5 in·lb). Avoid bending the cable tighter than a 25.4 mm radius. For optimal performance, maintain a clean target surface and verify the probe gap as per the Proximitor sensor manual.
Maintenance & Reliability
Periodically inspect the probe tip for contamination or damage. The PPS material resists chemicals and high temperatures, but exposure below -34°C may affect pressure seals. Follow the temperature schedule for hazardous area classifications — for EPL Ga/Gc, ambient ranges from -55°C up to +232°C depending on T rating. The 304 SST case provides corrosion resistance in wet environments. Check cable for cuts or kinks near the connector.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330709-000-040-50-12-00, verify that your Proximitor sensor matches the 5.0 meter probe length. This probe is designed for use with the five meter Proximitor only. For different cable lengths, consider alternate configurations. UBEST Automation stocks genuine Bently Nevada parts with fast delivery. Contact us to confirm compatibility with your existing system.