330901-00-15-05-02-CN Bently Nevada SST Proximity Probe

Product Overview

The Bently Nevada 330901-00-15-05-02-CN is a specialized 3300 NSv (Narrow System) proximity probe, specifically engineered for machinery with tight internal clearances where standard-diameter sensors cannot be used. This Made in U.S.A. transducer provides accurate eddy-current measurements for shaft vibration and axial position. This configuration features a 1.5-inch case length and a 1/4-28 UNF thread, constructed from premium AISI304 stainless steel. With a weight ranging between 14 and 150 grams depending on the final assembly, it offers a compact and lightweight solution with CN country-specific approval.

Core Technical Advantages

Precision and durability are the hallmarks of this NSv series probe. The sensor tip is made from Polyphenylene sulfide (PPS), providing excellent resistance to industrial chemicals and high-temperature degradation. The 75 Ω coaxial cable is insulated with fluoroethylene propylene (FEP), ensuring signal integrity with a stable DC resistance of 4.0 ± 0.5 ohms. For reliable installation, the case is designed to handle a recommended torque of 5.1 N•m (45 in•lb), maintaining high-stability positioning even in high-vibration environments.

Technical Specifications

Installation & Engineering Data

Successful deployment of the 330901-00-15-05-02-CN requires observing the maximum thread engagement limit of 0.375 inches. The probe incorporates a Viton O-ring designed to seal differential pressure between the tip and the case. While the probe is rated for extreme cold down to -52°C, it is important to note that sustained exposure below -34°C (-30°F) may lead to premature failure of the pressure seal. Proper torqueing to the recommended 45 in•lb ensures the AISI304 stainless steel case remains secure without stripping the machine threads.

Engineering Advantages

The primary benefit of the 3300 NSv system is its narrow "view" footprint, which significantly reduces side-viewing interference from neighboring metallic surfaces. This allows for linear and accurate readings on small shafts or in deep, narrow recesses where standard 8mm probes would fail. The ClickLoc® connector system provides a vibration-proof, moisture-resistant connection to the extension cable, ensuring long-term signal stability for the predictive maintenance of high-speed pumps, compressors, and turbines.

Technical FAQs

Q1: What does the "15" in the model code signify?
A1: The "15" represents the overall case length, which is 1.5 inches, providing sufficient reach for standard mounting brackets while maintaining a compact profile.

Q2: Is this probe compatible with any Bently Nevada Proximitor?
A2: No, it must be paired with a dedicated 3300 NSv Proximitor Sensor to ensure the output signal is correctly calibrated to the probe's narrow-system tip geometry.

Q3: Can this probe be used in high-moisture environments?
A3: Yes, the FEP insulation and ClickLoc® connector are designed to resist moisture, and the Viton O-ring provides a robust seal against differential pressure.