Bently Nevada 330701-00-050-10-12-05 3300 XL 11 mm Probe

The Bently Nevada 330701-00-050-10-12-05 belongs to the 3300 XL 11mm transducer product line. This system provides a larger linear range than standard 8mm probes. Specifically, the 11mm tip allows for displacement measurements up to 4 mm (160 mils). This makes it ideal for monitoring axial thrust position on large steam turbines. Furthermore, the probe effectively tracks radial vibration on shafts with significant thermal expansion. The increased sensing area ensures signal stability during high-amplitude shaft movements.

Configuration and Build Integrity

This specific model utilizes a robust mechanical design to withstand demanding industrial environments. The probe tip features high-strength polyphenylene sulfide (PPS) plastic. This material resists chemical degradation and extreme temperature fluctuations. Additionally, the FluidLoc cable prevents moisture from wicking through the lead wires. This protection remains vital for sensors located in high-pressure or oil-rich environments. The unit includes a 5.0-meter total length with a miniature coaxial connector. Gold-plated contacts ensure low-impedance signal transmission over many years of service.

Technical Parameters

• Model Code: 330701-00-050-10-12-05
• Tip Diameter: 11 mm (0.43 inches)
• Thread Scale: 1/2-20 UNF (English threads)
• Unthreaded Length: 0.0 inches
• Overall Case Length: 5.0 inches
• Total Cable Length: 1.0 meter (3.3 feet)
• Connector Type: ClickLoc miniature coaxial with connector protector
• Certification: ATEX/IECEx hazardous area approvals (Option 05)

System Integration and Accuracy

Proper operation requires connecting this probe to a matching 3300 XL 11mm Proximitor. The system produces a standard output of 3.94 V/mm (100 mV/mil). This sensitivity allows for precise diagnostics through 3500 series monitoring racks. Moreover, the 3300 XL series offers superior temperature compensation. This reduces measurement drift caused by fluctuating machinery temperatures. Such accuracy is critical for avoiding false alarms in power generation facilities. Consequently, it supports long-term equipment reliability and operational safety.

Critical Asset Protection

Engineers deploy these probes on critical rotating assets like centrifugal compressors. They function as a primary defense against catastrophic mechanical failure. By monitoring shaft position, the system protects internal seals and bearings. Furthermore, the probe serves as a high-reliability Keyphasor for phase reference data. This information assists in balancing procedures and rotor dynamic analysis. Ultimately, this 11mm probe provides a dependable solution for large-scale machinery protection programs.