Bently Nevada 330901-00-52-10-02-05 3300 NSv Proximity Probe

Description

The 330901-00-52-10-02-05 is a 3300 NSv proximity probe designed with a 1/4-28 UNF-2A thread and no stainless steel armor. This configuration is defined by Option 00, indicating a 0.0-inch unthreaded length (fully threaded case), and Option 52, specifying a 5.2-inch overall case length. The probe is equipped with a 1.0-meter (39-inch) standard integrated FEP coaxial cable (Option 10) terminated in a miniature ClickLoc connector without a connector protector (Option 02). To support installation in hazardous industrial atmospheres, this unit is supplied with Option 05 Multiple Approvals, which certifies it for global intrinsically safe and non-incendive environments.

The 3300 NSv (Near Side vibration) transducer system is engineered for micro-displacement and vibration monitoring in applications with restricted spatial envelopes or small target geometries. Unlike standard 8 mm probes that require larger targets to prevent field distortion, the narrower footprint of this probe operates effectively on target shaft diameters down to 20 mm (0.8 in) or smaller. This configuration is widely utilized in high-speed aeroderivative gas turbines, radial vibration monitoring of small bearings, and axial position tracking where traditional sensors cannot physically fit or would cause electromagnetic cross-talk.

Features

• Threaded Case Design: 1/4-28 UNF-2A thread configuration with a 5.2-inch case length and 0.0-inch unthreaded length for maximum thread engagement.
• Unarmored Cable Assembly: Includes a 1.0-meter standard integrated FEP coaxial cable without external stainless steel armor.
• ClickLoc Connector: Terminated with a miniature coaxial ClickLoc male connector for secure, low-loss coupling to extension cables.
• Hazardous Area Approvals: Equipped with Option 05 Multiple Approvals, providing certified safety compliance for hazardous zone applications.
• Target Optimization: Specially calibrated to provide linear displacement readings on small shaft diameters and narrow targets without field distortion.
• Robust Construction: Features a high-integrity polyphenylene sulfide (PPS) tip molded directly to an AISI 304 stainless steel probe body.

Applications

• Radial shaft vibration and axial position measurements on small-bore high-speed rotating machinery.
• Bearing housing and rotor displacement monitoring in aeroderivative gas turbines and compact industrial compressors.
• Proximity measurement applications where adjacent sensors must be mounted closely without cross-talk interference.
• Vibration detection on target geometries narrower than standard 8 mm probe constraints.

Ordering Information

The table below provides the full decoding structure of the 330901-00-52-10-02-05 proximity probe configuration based on the official manufacturer documentation:

Technical Specifications

Installation Guidelines

Maintain the minimum bend radius of the integrated FEP coaxial cable at 25.4 mm (1.0 in) to prevent damage to the inner conductor shielding. Adjust the physical probe gap using a feeler gauge, or monitor the DC voltage output of the companion Proximitor Sensor until it reads approximately -9.0 Vdc (corresponding to the nominal 1.0 mm or 40 mil gap). When installing the probe, ensure that the total length of the probe and extension cable equals the required system length of the Proximitor Sensor (either 5 or 7 meters). Avoid routing the high-impedance transducer cable adjacent to high-voltage AC lines to minimize electromagnetic interference.

Compliance and Certifications

• European Community Directives: EMC Directive 2014/30/EU, RoHS Directive 2011/65/EU
• EMC Standards: EN 61000-6-2 (Industrial Immunity), EN 61000-6-4 (Industrial Emissions)
• Functional Safety: Certified SIL 2 (HFT = 0), SIL 3 (HFT = 1) capability
• Hazardous Area Ratings (Option 05 Multiple Approvals): ATEX/IECEx Ex ia IIC T5...T1 Ga, Ex ia IIIC T90 degC...T280 degC Dc, Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc; Class I, Div 1 & 2, Groups A, B, C, D; Class II, Groups E, F, G; Class III