Bently Nevada 330905-00-25-05-02-CN 3300 NSv Proximity Probe

Description

Executing precise eddy current displacement measurements in tight clearances, the Bently Nevada 330905-00-25-05-02-CN serves as a core sensor component of the 3300 NSv proximity transducer system. Engineered specifically for applications with small target diameters and restricted installation space, this transducer delivers high-resolution radial vibration and axial position feedback. The Bently Nevada 330905-00-25-05-02-CN features an M10 x 1 unarmored thread configuration, a 250 mm overall case length, and a 0.5-meter standard coaxial cable terminated with a miniature coaxial ClickLoc connector. Certified for demanding industrial environments, its rugged physical design protects critical internal electronics against severe mechanical stress, temperature fluctuations, and oil exposure.

Features

• Optimized Small-Target Response: Designed to provide reliable proximity measurements on shafts or targets smaller than standard 5 mm and 8 mm systems.
• Advanced Tip Material: Constructed with high-performance Polyphenylene sulfide (PPS) to withstand chemical deterioration and thermal loading.
• Corrosion-Resistant Housing: AISI 304 stainless steel (SST) case offers superior resistance to moisture and industrial lubricants.
• Secure Interconnects: Fitted with a miniature coaxial ClickLoc connector to guarantee positive lock connections and eliminate signal loss.
• Thermally Stable Cable: 75-ohm coaxial cable with fluoroethylene propylene (FEP) insulation ensures stable signal routing across dynamic temperature extremes.

Applications

• Radial shaft vibration and axial position measurements on high-speed pumps and compressors.
• Monitoring of auxiliary machinery with tight mounting profiles and small-diameter target surfaces.
• Fluid-film bearing clearance and oil film thickness monitoring in turbomachinery.
• Integration with plant asset management networks and continuous vibration monitoring systems.

Ordering Information

Technical Specifications

Empirical Engineering Insights

Alternative Models & Compatibility

The 3300 NSv (Narrow System) proximity probe series is engineered exclusively for machinery with small targets or restricted clearances. Do not cross-connect the 3300 NSv probe with standard 3300 XL 5mm, 8mm, or 11mm Proximitor sensors, as the calibration curves and eddy current excitation profiles differ significantly. Ensure your monitoring terminal is configured with the specific 3300 NSv Proximitor Sensor (e.g., 330901) to avoid non-linear scaling errors or false fault alerts.

Application Pitfalls & Engineering Notes

When utilizing the M10 unarmored case style, side-clearance is critical. Because the probe does not have a metal protective sleeve extending to the tip, it is highly sensitive to lateral metallic structures. Maintain a minimum clear radial distance of 1.5 times the probe head diameter around the sensor tip. Failure to maintain this clearance will result in the sensor calibration reacting to the mounting bracket or bore wall instead of the target shaft surface.

Commissioning & Wiring Tips

Always employ a calibrated torque wrench during installation. Over-tightening the thread inside the bracket can warp the inner coaxial conductor, altering the cable impedance and introducing measurement errors. When mating the miniature ClickLoc coaxial connector, apply the designated connector silicon sleeve or self-fusing tape to prevent machinery oil and moisture ingress from grounding the signal shield.

Installation Guidelines