Bently Nevada 330101-00-11-20-02-CN 3300 XL 8 mm Proximity Probe

Description

Machinery protection and condition monitoring architectures rely on the Bently Nevada 330101-00-11-20-02-CN to capture precise, non-contact measurements of shaft vibration and position. As a vital component of the 3300 XL 8 mm proximity transducer line, this probe translates physical distance to rotating or reciprocating shafts into continuous electrical feedback. Built to withstand aggressive industrial fluids and thermal stress, the unit operates reliably within critical turbomachinery housings.

Features

• High-Performance Tip: Crafted from polyphenylene sulfide (PPS) to resist fluid absorption and chemical degradation.
• Rugged Housing: AISI 303 or 304 stainless steel case shields the internal sensing coil from structural shear.
• Interlocking Cable Connection: Equipped with a ClickLoc miniature coaxial connector to secure the signal path under high vibration.
• Coaxial Insulation: FEP-insulated 75-ohm triaxial probe cable limits signal degradation and electromagnetic noise coupling.

Applications

• Turbine shaft dynamic radial vibration monitoring.
• Centrifugal compressor thrust and axial displacement measurement.
• Hydrocarbon pump rotor dynamics and eccentricity analysis.
• High-speed industrial gearbox shaft position monitoring.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This probe has a physical length of 2.0 meters. In Bently Nevada 3300 XL 8 mm systems, the combined length of the probe and extension cable must match the required electrical length of the Proximitor sensor (either 5.0 meters or 9.0 meters). If utilizing a 5.0-meter Proximitor sensor, a 3.0-meter extension cable must be matched with this 2.0-meter probe. Interchanging mismatching lengths introduces severe scale-factor errors and invalidates sensor calibration.

Application Pitfalls & Engineering Notes

The system calibration is designed around AISI 4140 steel as the target material. Using a different target material (such as stainless steel or aluminum) without recalibrating the Proximitor sensor significantly skews the millivolt-per-mil scale factor. Additionally, ensure adjacent probe tips are separated by a minimum physical distance of 40 mm (1.6 inches) to prevent electromagnetic cross-talk in dual-probe dynamic shaft vibration setups.

Commissioning & Wiring Tips

Always clean ClickLoc connectors with electronic contact cleaner before mating to clear trace grease, oils, or dust. Avoid twisting the coaxial cable during the threading process; utilize a split-conduit mounting bracket or twist-free dynamic positioning setups. Secure the locknuts without over-torquing to safeguard the stainless steel thread profile.

Installation Guidelines