Bently Nevada 330908-00-18-10-02-05 3300 NSv Proximity Probes

Description

Option 00 (0.0 in unthreaded length) and Option 18 (1.8 in case length) specify this 3300 NSv proximity probe configuration — 330908-00-18-10-02-05. This configuration features a 1.0 m total cable length (Option 10) terminating in a miniature coaxial ClickLoc connector without a connector protector (Option 02), backed by multiple international hazardous area approvals (Option 05).

Unlike armored options like the 330909 series or variants with integrated connector protectors (Option 01), the 330908-00-18-10-02-05 utilizes an unarmored standard FEP-insulated coaxial cable, making it suitable for compact installations where conduit or external routing provides physical protection. Its 3/8-24 UNF threaded case is ideal for tight-clearance applications where a larger 8 mm probe tip cannot be accommodated, yet a standard threaded mount is required. It integrates directly into a complete 3300 XL NSv transducer system, pairing with the 330930 extension cable and the 330980 Proximitor sensor.

Features

• Option 00 specifies a fully threaded probe body with 0.0 in of unthreaded length.
• Option 18 provides an overall case length of 1.8 in with standard 3/8-24 UNF-2A threading.
• Option 10 delivers a 1.0 m (39 in) FEP-insulated coaxial cable.
• Option 02 provides a gold-plated miniature coaxial ClickLoc connector for secure probe-to-cable termination without a pre-installed connector protector.
• Option 05 includes multiple hazardous area agency approvals, including ATEX, IECEx, and CSA certificates.
• TipLoc molding process creates a strong chemical and physical bond between the polyphenylene sulfide (PPS) probe tip and the AISI 304 stainless steel case.
• CableLoc design offers up to 220 N (50 lb) of pull strength to prevent cable detachment from the probe body.

Applications

• Axial position and radial vibration measurements in small-bore machinery.
• Centrifugal compressors and high-speed pumps with restricted target area geometries.
• Aeroderivative gas turbines and auxiliary turbo-machinery with tight clearances.
• Fluid-film bearing monitoring on small shafts under 50 mm (2.0 in) where traditional 8 mm probes suffer from side-view sensitivity or cross-talk.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure proper operation and prolong system life, observe these installation guidelines:

• Thread Torque: Tighten the 3/8-24 UNF probe case to a recommended installation torque of 11.3 N m (100 in-lb) to prevent thread or casing damage. Do not exceed the maximum rated torque of 33.9 N m (300 in-lb).
• Minimum Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 in) along the unarmored coaxial cable during routing to avoid signal attenuation or physical damage to the conductors.
• Target Clearance: Ensure the target shaft or surface meets the minimum flat target diameter of 8.9 mm (0.35 in). A target diameter of 13 mm (0.5 in) or larger is recommended to avoid shifts in scale factor.
• Cross-talk Prevention: Maintain a center-to-center probe separation of at least 25 mm (1.0 in) for parallel axial probes, or 23 mm (0.9 in) for radial vibration configurations to eliminate electromagnetic cross-talk.
• Connector Maintenance: Prior to mating, ensure the ClickLoc connectors are free of oil, moisture, and debris. Use silicone self-fusing tape to protect connections in humid or wet environments (not recommended inside machine casings exposed to turbine oil).

Compliance and Certifications

• European CE Mark: Complies with EMC Directive 2014/30/EU (Standards EN 61000-6-2, EN 61000-6-4)
• RoHS: Complies with European Directive 2011/65/EU and China RoHS regulations
• Maritime Approvals: Approved under ABS and other maritime classification society standards
• Functional Safety: SIL 2 certified (HFT = 0) or SIL 3 (HFT = 1) when integrated into an appropriately designed safety loop
• Hazardous Area Approvals (Option 05): Ex ia IIC T5...T1 Ga, Ex ia IIIC T90degC...T280degC Dc, Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc, Class I Div 1 Groups A, B, C, D; Class II Groups E, F, G; Class III (intrinsically safe and non-incendive installations).